drm/i915/display: remove duplicated argument

Fix the following coccicheck warning:

./drivers/gpu/drm/i915/display/intel_display_power.c:3081:1-28:
 duplicated argument to & or |

This commit fixes duplicate argument. It might be a typo.
But what I can do is to remove it now.
Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210605032209.16111-1-wanjiabing@vivo.com

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

@@ -3078,7 +3078,6 @@ intel_display_power_put_mask_in_set(struct drm_i915_private *i915,
 	BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) |	\
 	BIT_ULL(POWER_DOMAIN_PORT_DDI_LANES_D_XELPD) |	\
 	BIT_ULL(POWER_DOMAIN_PORT_DDI_LANES_E_XELPD) |	\
-	BIT_ULL(POWER_DOMAIN_AUX_C) |			\
 	BIT_ULL(POWER_DOMAIN_PORT_DDI_LANES_TC1) |	\
 	BIT_ULL(POWER_DOMAIN_PORT_DDI_LANES_TC2) |	\
 	BIT_ULL(POWER_DOMAIN_PORT_DDI_LANES_TC3) |	\