drm/amd/display: remove duplicated comparison expression

There is comparison expression that is duplicated and hence one
of the expressions can be removed.  Remove it.

Addresses-Coverity: ("Same on both sides")
Fixes: 12e2b2d4 ("drm/amd/display: add dcc programming for dual plane")
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc.c

@@ -1491,7 +1491,6 @@ static enum surface_update_type get_plane_info_update_type(const struct dc_surfa
 	}
 
 	if (u->plane_info->plane_size.surface_pitch != u->surface->plane_size.surface_pitch
-			|| u->plane_info->plane_size.surface_pitch != u->surface->plane_size.surface_pitch
 			|| u->plane_info->plane_size.chroma_pitch != u->surface->plane_size.chroma_pitch) {
 		update_flags->bits.plane_size_change = 1;
 		elevate_update_type(&update_type, UPDATE_TYPE_MED);