drm/i915: Remove redundant store of logical CDCLK state

drm/i915: Remove redundant store of logical CDCLK state

BugLink: https://launchpad.net/bugs/1826868
We copied the original state into the atomic state already earlier in
the function, so no need to do it a second time.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190320135439.12201-3-imre.deak@intel.com
(backported from commit 2b21dfbeee725778daed2c3dd45a3fc808176feb)
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Acked-by: AceLan Kao <acelan.kao@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>