drm/i915: Nuke stale plane cdclk ratio FIXMEs

The plane ratio stuff got implemented in
commit bb6ae9e6 ("drm/i915: Allow planes to
declare their minimum acceptable cdclk") so these
FIXMEs have no business being here.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220916165206.1499-1-ville.syrjala@linux.intel.comReviewed-by: Luca Coelho <luciano.coelho@intel.com>

drivers/gpu/drm/i915/display/intel_cdclk.c

@@ -2464,10 +2464,6 @@ static int bdw_modeset_calc_cdclk(struct intel_cdclk_state *cdclk_state)
 	if (min_cdclk < 0)
 		return min_cdclk;
 
-	/*
-	 * FIXME should also account for plane ratio
-	 * once 64bpp pixel formats are supported.
-	 */
 	cdclk = bdw_calc_cdclk(min_cdclk);
 
 	cdclk_state->logical.cdclk = cdclk;
@@ -2534,10 +2530,6 @@ static int skl_modeset_calc_cdclk(struct intel_cdclk_state *cdclk_state)
 
 	vco = skl_dpll0_vco(cdclk_state);
 
-	/*
-	 * FIXME should also account for plane ratio
-	 * once 64bpp pixel formats are supported.
-	 */
 	cdclk = skl_calc_cdclk(min_cdclk, vco);
 
 	cdclk_state->logical.vco = vco;