msm: camera: remove frame delay at start_stream in msm_sensor

required for latency optimization

Change-Id: I3d039e21ee8736cf8df1373d5386671f77f2382c
Signed-off-by: Punit Soni <punits@codeaurora.org>
Signed-off-by: Dhivya Subramanian <dthiru@codeaurora.org>