Revert "SurfaceFlinger: Change to support framebuffer flip for 2D blitters"

This change is not useful for htc bravo (error queuing buffer to SurfaceTexture)

This reverts commit 4f5750b3d0252465c6c42bb1a9f67c0591d59579.

Conflicts:

	services/surfaceflinger/DisplayHardware/HWComposer.cpp

Change-Id: I932ab30abe1ae342caa23ebe9cc5a2aa47eab85f