Shi-Hao Hong 7eae32d7f2 Revert getSystemGestureExclusionRects and setSystemGestureExclusionRects (flutter/engine#17613)
* Revert getSystemGestureExclusionRects and setSystemGestureExclusionRects 

* Remove references to removed PlatformChannelTest.java file
2020-04-09 20:44:37 -07:00
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