Revert "Fix Android back button behavior"

This reverts commit 7f29724a8561dee3e10306d280e8eb8c6c668bcc.

Conflicts:
	MonoGame.Framework/Android/AndroidGameActivity.cs

Conflicts:
	MonoGame.Framework/Android/AndroidGameActivity.cs
Fix AndroidGamePlatform.Exit() behavior
SpriteBatch multipass rendering

Support for multipass effects in SpriteBatch
Fix for PSM

fixes PSM and applies the spritePass regardless of whether or not an
effect is used
Quick fix

Fixed pass order
Missed a PSM draw call

Missed a PSM draw call
Merge pull request #2825 from SickheadGames/build

Unit Test Fixes
Merge pull request #2824 from ShawnM427/develop

SpriteBatch multipass rendering
minor typo fix in comment: 'chage' to 'change'
Merge pull request #2826 from JacquesLucke/patch-1

minor typo fix in comment: 'chage' to 'change'
Merge pull request #2813 from flyingdevelopmentstudio/FixAndroidGamePlatformExit

Fix android game platform exit