Remove extra code which set Activity to null.

Activity is set to null with setActivity() called from onDestroy and
thise additional set (that this CL removes) was causing a precondition
failure due to a double-teardown.

bug:10516078
Change-Id: I501b36173f24f2a4fdf38ecc38239ea81cc66e55
1 file changed
tree: d1f6f6542819540ef03f6b04e2c07da9484fd8dd
  1. InCallUI/