msm: mdss: remove invalid csc initialization during hw init

CSC configuration should not be re-initialized in hw init
because it overrides the configuration during idle power
collapse restore. That leads to invalid csc table
configuration after idle pc. All csc configuration will
be passed by client in atomic validate/commit IOCTL call
and will be reset in pipe free call.

Change-Id: Id3096051584f756dc7af58f765040bcc445af047
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>