drm/amd/display: Remove unused NUM_ELEMENTS macros

Removes unused NUM_ELEMENTS macros. Discovered while removing cases
where ARRAY_SIZE from the header <linus/array_size.h> can be used.
This also aligns with the array_size.cocci coccinelle check.

Suggested-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Linus Probert <linus.probert@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: LiquidityC

drivers/gpu/drm/amd/display/dc/dpp/dcn10/dcn10_dpp_cm.c

@@ -49,9 +49,6 @@
 #define FN(reg_name, field_name) \
 	dpp->tf_shift->field_name, dpp->tf_mask->field_name
 
-#define NUM_ELEMENTS(a) (sizeof(a) / sizeof((a)[0]))
-
-
 enum dcn10_coef_filter_type_sel {
 	SCL_COEF_LUMA_VERT_FILTER = 0,
 	SCL_COEF_LUMA_HORZ_FILTER = 1,

drivers/gpu/drm/amd/display/dc/dpp/dcn401/dcn401_dpp_cm.c

@@ -49,9 +49,6 @@
 #define FN(reg_name, field_name) \
 	dpp->tf_shift->field_name, dpp->tf_mask->field_name
 
-#define NUM_ELEMENTS(a) (sizeof(a) / sizeof((a)[0]))
-
-
 enum dcn401_coef_filter_type_sel {
 	SCL_COEF_LUMA_VERT_FILTER = 0,
 	SCL_COEF_LUMA_HORZ_FILTER = 1,

drivers/gpu/drm/amd/display/dc/mpc/dcn20/dcn20_mpc.c

@@ -43,8 +43,6 @@
 #define FN(reg_name, field_name) \
 	mpc20->mpc_shift->field_name, mpc20->mpc_mask->field_name
 
-#define NUM_ELEMENTS(a) (sizeof(a) / sizeof((a)[0]))
-
 void mpc2_update_blending(
 	struct mpc *mpc,
 	struct mpcc_blnd_cfg *blnd_cfg,

drivers/gpu/drm/amd/display/dc/mpc/dcn30/dcn30_mpc.c

@@ -40,10 +40,6 @@
 #define FN(reg_name, field_name) \
 	mpc30->mpc_shift->field_name, mpc30->mpc_mask->field_name
 
-
-#define NUM_ELEMENTS(a) (sizeof(a) / sizeof((a)[0]))
-
-
 void mpc3_mpc_init(struct mpc *mpc)
 {
 	struct dcn30_mpc *mpc30 = TO_DCN30_MPC(mpc);