anv: remove own GetRenderingAreaGranularityKHR

As it does the same as common version provided by runtime.

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38474>

src/intel/vulkan/anv_image.c

@@ -4075,14 +4075,3 @@ anv_layout_has_untracked_aux_writes(const struct intel_device_info * const devin
 
    return true;
 }
-
-void anv_GetRenderingAreaGranularityKHR(
-    VkDevice                                    _device,
-    const VkRenderingAreaInfoKHR*               pRenderingAreaInfo,
-    VkExtent2D*                                 pGranularity)
-{
-   *pGranularity = (VkExtent2D) {
-      .width = 1,
-      .height = 1,
-   };
-}