freedreno/a5xx: remove unused reference to gmem_alignw in layout code

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4611>
diff --git a/src/gallium/drivers/freedreno/a5xx/fd5_resource.c b/src/gallium/drivers/freedreno/a5xx/fd5_resource.c
index e4420e6..e879b36 100644
--- a/src/gallium/drivers/freedreno/a5xx/fd5_resource.c
+++ b/src/gallium/drivers/freedreno/a5xx/fd5_resource.c
@@ -47,9 +47,8 @@
 setup_slices(struct fd_resource *rsc, uint32_t alignment, enum pipe_format format)
 {
 	struct pipe_resource *prsc = &rsc->base;
-	struct fd_screen *screen = fd_screen(prsc->screen);
 	enum util_format_layout layout = util_format_description(format)->layout;
-	uint32_t pitchalign = screen->gmem_alignw;
+	uint32_t pitchalign;
 	uint32_t heightalign;
 	uint32_t level, size = 0;
 	uint32_t width = prsc->width0;