Revert "msm_fb: display: add pipe commit ioctl"

This reverts commit 9fc02a5544fb7e5a4df9dd19307b8c1c6d1af0b0.

Conflicts:
	drivers/video/msm/mdp4_overlay_dsi_cmd.c
	drivers/video/msm/mdp4_overlay_dsi_video.c
	drivers/video/msm/mdp4_overlay_lcdc.c