Revert "devfreq: bimc_bwmon: Add support to enable BWMON clks"

This reverts commit 4b5e7268.
There is no longer a need to enable BWMON clocks in the kernel
so remove this feature to cleanup the code.

Change-Id: I92493eb04b7d984060f9495a87572ecde3a6dab2
Signed-off-by: Amir Vajid <avajid@codeaurora.org>