Revert "error out when SurfaceTexture APIs are called while not connected"

This reverts commit a04cda9986366ab480ad8008c4d923271b05d78e.

Conflicts:

	include/gui/SurfaceTexture.h
	libs/gui/SurfaceTexture.cpp

Change-Id: Ib655016462c496ee2a27f7cb33a6e8b18cfe684a
1 file changed