msm: clock-8084: Remove ocmem cfg clock

Ocmem_cfg_ahb_clk is turned on by bootloader and will be
left on. Apps should not control it. Therefore, remove the
code for this clock to prevent handoff code turn it off.

Change-Id: I92c3015fb012e10346638e9b47e0b347f48eeacc
Signed-off-by: Tianyi Gou <tgou@codeaurora.org>