Remove incorrect line

Author: gspencergoog

shell/platform/android/io/flutter/embedding/android/KeyEmbedderResponder.java

@@ -369,7 +369,6 @@ private boolean handleEventImpl(
     output.physicalKey = physicalKey;
     output.character = character;
     output.synthesized = false;
-    output.deviceType = KeyData.DeviceType.kKeyboard;
 
     sendKeyEvent(output, onKeyEventHandledCallback);
     for (final Runnable postSyncEvent : postSynchronizeEvents) {