Prune proguard.flags down to more essential pieces.

At first measure, this saves approximately 125KB on SystemUIGoogle.
More importantly, it opens the door for more savings as code is
further refactored.

Bug: 205725937
Test: manual
Change-Id: Id9566fb30a7e2436f3f55c12705ba27b9c89bcac

packages/SystemUI/proguard.flags

@@ -1,22 +1,16 @@
 # Preserve line number information for debugging stack traces.
 -keepattributes SourceFile,LineNumberTable
 
--keep class com.android.systemui.recents.OverviewProxyRecentsImpl
--keep class com.android.systemui.statusbar.car.CarStatusBar
--keep class com.android.systemui.statusbar.phone.StatusBar
--keep class com.android.systemui.statusbar.tv.TvStatusBar
 -keep class com.android.systemui.car.CarSystemUIFactory
 -keep class com.android.systemui.SystemUIFactory
 -keep class com.android.systemui.tv.TvSystemUIFactory
--keep class * extends com.android.systemui.CoreStartable
--keep class * implements com.android.systemui.CoreStartable$Injector
 
 -keepclasseswithmembers class * {
     public <init>(android.content.Context, android.util.AttributeSet);
 }
 
 -keep class ** extends androidx.preference.PreferenceFragment
--keep class com.android.systemui.tuner.*
+
 -keep class com.android.systemui.plugins.** {
     *;
 }
@@ -25,10 +19,6 @@
 }
 -keep class androidx.core.app.CoreComponentFactory
 
--keep public class * extends com.android.systemui.CoreStartable {
-    public <init>(android.content.Context);
-}
-
 # Keep the wm shell lib
 -keep class com.android.wm.shell.*
 # Keep the protolog group methods that are called by the generated code
@@ -36,11 +26,6 @@
     *;
 }
 
--keep,allowoptimization,allowaccessmodification class com.android.systemui.dagger.GlobalRootComponent { !synthetic *; }
--keep,allowoptimization,allowaccessmodification class com.android.systemui.dagger.GlobalRootComponent$SysUIComponentImpl { !synthetic *; }
--keep,allowoptimization,allowaccessmodification class com.android.systemui.dagger.Dagger** { !synthetic *; }
--keep,allowoptimization,allowaccessmodification class com.android.systemui.tv.Dagger** { !synthetic *; }
-
 # Allows proguard to make private and protected methods and fields public as
 # part of optimization. This lets proguard inline trivial getter/setter methods.
 -allowaccessmodification