drm/amd/display: Fix comment typo

The double `aligned' is duplicated in line 1070, remove one.
Signed-off-by: min tang <tangmin@cdjrlc.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c

@@ -1086,7 +1086,7 @@ static void optc1_set_test_pattern(
 				src_color[index] >> (src_bpc - dst_bpc);
 		/* CRTC_TEST_PATTERN_DATA has 16 bits,
 		 * lowest 6 are hardwired to ZERO
-		 * color bits should be left aligned aligned to MSB
+		 * color bits should be left aligned to MSB
 		 * XXXXXXXXXX000000 for 10 bit,
 		 * XXXXXXXX00000000 for 8 bit and XXXXXX0000000000 for 6
 		 */