drm/amd/dc: fix semicolon.cocci warnings

Remove unneeded semicolons.

Generated by: scripts/coccinelle/misc/semicolon.cocci
Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c

@@ -938,11 +938,11 @@ static void copy_crtc_timing_for_drm_display_mode(
 	dst_mode->crtc_hsync_end = src_mode->crtc_hsync_end;
 	dst_mode->crtc_htotal = src_mode->crtc_htotal;
 	dst_mode->crtc_hskew = src_mode->crtc_hskew;
-	dst_mode->crtc_vblank_start = src_mode->crtc_vblank_start;;
-	dst_mode->crtc_vblank_end = src_mode->crtc_vblank_end;;
-	dst_mode->crtc_vsync_start = src_mode->crtc_vsync_start;;
-	dst_mode->crtc_vsync_end = src_mode->crtc_vsync_end;;
-	dst_mode->crtc_vtotal = src_mode->crtc_vtotal;;
+	dst_mode->crtc_vblank_start = src_mode->crtc_vblank_start;
+	dst_mode->crtc_vblank_end = src_mode->crtc_vblank_end;
+	dst_mode->crtc_vsync_start = src_mode->crtc_vsync_start;
+	dst_mode->crtc_vsync_end = src_mode->crtc_vsync_end;
+	dst_mode->crtc_vtotal = src_mode->crtc_vtotal;
 }
 
 static void decide_crtc_timing_for_drm_display_mode(