SensorTest must unregister sensor event listener after each test case done.

SensorTest#testRegisterTwiceWithSameSensor and #testBatchAndFlushWithHandler
must unregister sensor event listener after test done.

Change-Id: I0e7c561f6e0dc7cf2763cefe6d737906d328795a
Signed-off-by: Han, He <he.han@intel.com>
1 file changed