ac/llvm: remove unnecessary gfx11 condition for nir_intrinsic_store_buffer_amd

ac_build_buffer_store_dword is responsible for this.

Reviewed-by: Mihai Preda <mhpreda@gmail.com>
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19419>

src/amd/llvm/ac_nir_to_llvm.c

@@ -4254,7 +4254,7 @@ static bool visit_intrinsic(struct ac_nir_context *ctx, nir_intrinsic_instr *ins
       enum ac_image_cache_policy cache_policy = 0;
       if (swizzled)
          cache_policy |= ac_swizzled;
-      if (coherent && ctx->ac.gfx_level < GFX11)
+      if (coherent)
          cache_policy |= ac_glc;
       if (slc)
          cache_policy |= ac_slc;