Remove code_sharing and place_tracker, cleanup repo (#2831)

Fixes #2818, #2523, #2528

cupertino_gallery/lib/widgets/action_sheet_page.dart

@@ -6,9 +6,7 @@ class ActionSheetPage extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return CupertinoPageScaffold(
-      navigationBar: const CupertinoNavigationBar(
-        middle: Text('Action Sheet'),
-      ),
+      navigationBar: const CupertinoNavigationBar(middle: Text('Action Sheet')),
       child: Center(
         child: CupertinoButton(
           child: const Text('Show Action Sheet'),
@@ -30,7 +28,7 @@ class ActionSheetPage extends StatelessWidget {
                     onPressed: () {
                       Navigator.pop(context);
                     },
-                  )
+                  ),
                 ],
                 cancelButton: CupertinoActionSheetAction(
                   isDefaultAction: true,

cupertino_gallery/lib/widgets/activity_indicator_page.dart

@@ -6,12 +6,8 @@ class ActivityIndicatorPage extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return const CupertinoPageScaffold(
-      navigationBar: CupertinoNavigationBar(
-        middle: Text('Activity Indicator'),
-      ),
-      child: Center(
-        child: CupertinoActivityIndicator(),
-      ),
+      navigationBar: CupertinoNavigationBar(middle: Text('Activity Indicator')),
+      child: Center(child: CupertinoActivityIndicator()),
     );
   }
 }

cupertino_gallery/lib/widgets/checkbox_page.dart

@@ -13,9 +13,7 @@ class _CheckboxPageState extends State<CheckboxPage> {
   @override
   Widget build(BuildContext context) {
     return CupertinoPageScaffold(
-      navigationBar: const CupertinoNavigationBar(
-        middle: Text('Checkbox'),
-      ),
+      navigationBar: const CupertinoNavigationBar(middle: Text('Checkbox')),
       child: Center(
         child: CupertinoCheckbox(
           value: _value,

cupertino_gallery/lib/widgets/date_picker_page.dart

@@ -6,15 +6,11 @@ class DatePickerPage extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return CupertinoPageScaffold(
-      navigationBar: const CupertinoNavigationBar(
-        middle: Text('Date Picker'),
-      ),
+      navigationBar: const CupertinoNavigationBar(middle: Text('Date Picker')),
       child: Center(
         child: SizedBox(
           height: 200,
-          child: CupertinoDatePicker(
-            onDateTimeChanged: (DateTime newDate) {},
-          ),
+          child: CupertinoDatePicker(onDateTimeChanged: (DateTime newDate) {}),
         ),
       ),
     );

cupertino_gallery/lib/widgets/picker_page.dart

@@ -6,20 +6,14 @@ class PickerPage extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return CupertinoPageScaffold(
-      navigationBar: const CupertinoNavigationBar(
-        middle: Text('Picker'),
-      ),
+      navigationBar: const CupertinoNavigationBar(middle: Text('Picker')),
       child: Center(
         child: SizedBox(
           height: 200,
           child: CupertinoPicker(
             itemExtent: 32,
             onSelectedItemChanged: (int index) {},
-            children: const <Widget>[
-              Text('One'),
-              Text('Two'),
-              Text('Three'),
-            ],
+            children: const <Widget>[Text('One'), Text('Two'), Text('Three')],
           ),
         ),
       ),

cupertino_gallery/lib/widgets/search_text_field_page.dart

@@ -6,9 +6,7 @@ class SearchTextFieldPage extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return const CupertinoPageScaffold(
-      navigationBar: CupertinoNavigationBar(
-        middle: Text('Search Text Field'),
-      ),
+      navigationBar: CupertinoNavigationBar(middle: Text('Search Text Field')),
       child: Center(
         child: Padding(
           padding: EdgeInsets.all(16.0),

cupertino_gallery/lib/widgets/slider_page.dart

@@ -13,9 +13,7 @@ class _SliderPageState extends State<SliderPage> {
   @override
   Widget build(BuildContext context) {
     return CupertinoPageScaffold(
-      navigationBar: const CupertinoNavigationBar(
-        middle: Text('Slider'),
-      ),
+      navigationBar: const CupertinoNavigationBar(middle: Text('Slider')),
       child: Center(
         child: CupertinoSlider(
           value: _value,

cupertino_gallery/lib/widgets/switch_page.dart

@@ -13,9 +13,7 @@ class _SwitchPageState extends State<SwitchPage> {
   @override
   Widget build(BuildContext context) {
     return CupertinoPageScaffold(
-      navigationBar: const CupertinoNavigationBar(
-        middle: Text('Switch'),
-      ),
+      navigationBar: const CupertinoNavigationBar(middle: Text('Switch')),
       child: Center(
         child: CupertinoSwitch(
           value: _value,

cupertino_gallery/lib/widgets/text_field_page.dart

@@ -6,15 +6,11 @@ class TextFieldPage extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return const CupertinoPageScaffold(
-      navigationBar: CupertinoNavigationBar(
-        middle: Text('Text Field'),
-      ),
+      navigationBar: CupertinoNavigationBar(middle: Text('Text Field')),
       child: Center(
         child: Padding(
           padding: EdgeInsets.all(16.0),
-          child: CupertinoTextField(
-            placeholder: 'Enter text',
-          ),
+          child: CupertinoTextField(placeholder: 'Enter text'),
         ),
       ),
     );

cupertino_gallery/lib/widgets/text_theme_page.dart

@@ -6,9 +6,7 @@ class TextThemePage extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return CupertinoPageScaffold(
-      navigationBar: const CupertinoNavigationBar(
-        middle: Text('Text Theme'),
-      ),
+      navigationBar: const CupertinoNavigationBar(middle: Text('Text Theme')),
       child: Center(
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
@@ -35,9 +33,9 @@ class TextThemePage extends StatelessWidget {
             const SizedBox(height: 16),
             Text(
               'This is the nav large title text style',
-              style: CupertinoTheme.of(context)
-                  .textTheme
-                  .navLargeTitleTextStyle,
+              style: CupertinoTheme.of(
+                context,
+              ).textTheme.navLargeTitleTextStyle,
             ),
             const SizedBox(height: 16),
             Text(
@@ -47,8 +45,9 @@ class TextThemePage extends StatelessWidget {
             const SizedBox(height: 16),
             Text(
               'This is the date time picker text style',
-              style:
-                  CupertinoTheme.of(context).textTheme.dateTimePickerTextStyle,
+              style: CupertinoTheme.of(
+                context,
+              ).textTheme.dateTimePickerTextStyle,
             ),
           ],
         ),

cupertino_gallery/lib/widgets/time_picker_page.dart

@@ -6,9 +6,7 @@ class TimePickerPage extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return CupertinoPageScaffold(
-      navigationBar: const CupertinoNavigationBar(
-        middle: Text('Time Picker'),
-      ),
+      navigationBar: const CupertinoNavigationBar(middle: Text('Time Picker')),
       child: Center(
         child: SizedBox(
           height: 200,