Revert "drm/msm/sde: add sysfs node in dpu driver to provide fps"

This reverts 'commit 9a0d995e ("drm/msm/sde: add sysfs node
in dpu driver to provide fps")'
This change adds sysfs node in mdp driver which breaks some other
modules.

Change-Id: Ica098b3e89f98d36f6fd9cdda9ba73d7434fa6f6
Signed-off-by: Narendra Muppalla <NarendraM@codeaurora.org>