Restore Overlay Brightness When Re-entering Full Screen

Fix https://github.com/futo-org/grayjay-android/issues/727

Changelog: changed

app/src/main/java/com/futo/platformplayer/views/behavior/GestureControlView.kt

@@ -755,10 +755,6 @@ class GestureControlView : LinearLayout {
                 }
             }
 
-            if (!Settings.instance.gestureControls.useSystemBrightness) {
-                _brightnessFactor = 1.0f;
-            }
-
             if (Settings.instance.gestureControls.useSystemVolume) {
                 val audioManager = context.getSystemService(Context.AUDIO_SERVICE) as AudioManager
                 val currentVolume = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC)