Revert "Include fragment support in Android build to allow use of FragmentActivity in FlutterActivity (#9036)" (#9041)

This reverts commit 6bf0ceb0.

Include fragment support in Android build to allow use of FragmentActivity in FlutterActivity (#9036)

* adds border radius to ink widgets. sets default ink border radius for material buttons with no background colors

* tidying up code

* add ink test stub

* remove unused import

Fixes issue with removing and re-adding a toolbar which is connected to the same TabBarController (#9015)

* update platform_channel package name

* lowercase name

* Rename platform_services to platform_channel

* rename in README

* renamed tests

* update modules.xml

The very first time `pod install` is invoked, CocoaPods downloads the master spec repository, which takes quite a while. Before this change, the build appeared to have stalled. With this change, at least the spinner is moving.

Added `pod setup` to the install instructions for CocoaPods, so the spec repo is downloaded while setting up Flutter, instead of during the first build.

These parameters are the width, not the height.

Otherwise it's somewhat verbose to configure all the text themes.

Old Android Stuio versions pior to 2.2.0 didn't come with Java bundled. Make sure flutter doesn't crash when we try to determine the Java version of those old Android Studio installations.

* Update the examples README file

* Addressed comment

This reverts commit 38e4e48d.

* adds highlight + splash color properties to material button

* add states to raised button + flat button

* fixes an issue where the custom highlight would not be properly set

* Add preliminary tests for theme highlight + splash and via theme

* documentation changes. tweaks per code review feedback

* comment out unused variable

* remove unused import

* documentation updates. removed commented code

* Use Java bundled with Android Studio for gradle

* review comments

Go through all packages brought in by pub, and write the name and path of every one that is a flutter plugin into .flutter-plugins.

In android/settings.gradle and ios/Podfile, read in .flutter-plugins, if that file exists. The Android / iOS code from the plugins is automatically added as dependencies of the native code of the app.

* Add start-up test for flutter_view sample

* add reportMetrics flag to startup test

* rewording in manifest.yaml