Revert "msm: kgsl: implement server-side waits"

This reverts commit 14e9c0d93be1307ef90941837a1d9abf87eb3fff.

Conflicts:

	drivers/gpu/msm/adreno.c
	drivers/gpu/msm/kgsl.c
	drivers/gpu/msm/kgsl.h
	drivers/gpu/msm/kgsl_events.c
	drivers/gpu/msm/kgsl_iommu.c
	drivers/gpu/msm/kgsl_sharedmem.c
	drivers/gpu/msm/kgsl_sync.c