remove BIND_VOICE_INTERACTION perm from shell user

BIND_VOICE_INTERACTION permission was added for GTS test code usage.
The GTS test cases relying on this permission previously have been
refactored to not require the permision any longer.

Bug: 178984748
Test: gts-tradefed run gts -m GtsAssistIntentTestCases
Change-Id: I6811b929d65400af39e17c75c638bc2c1fd9ef7e