anv: Drop the anv_validate block helper

Over the course of driver development, we've come up with a number of
different schemes for adding giant blocks of asserts inside the driver.
This one is only being used once in anv_pipeline.c and the way it's
being used actually generates compiler warnings in release builds.  This
commit drops the anv_validate macro and just puts the contents of the
one validation function in side of a "#ifdef DEBUG" guard.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>

src/intel/vulkan/anv_pipeline.c

@@ -1119,6 +1119,7 @@ copy_non_dynamic_state(struct anv_pipeline *pipeline,
 static void
 anv_pipeline_validate_create_info(const VkGraphicsPipelineCreateInfo *info)
 {
+#ifdef DEBUG
    struct anv_render_pass *renderpass = NULL;
    struct anv_subpass *subpass = NULL;
 
@@ -1158,6 +1159,7 @@ anv_pipeline_validate_create_info(const VkGraphicsPipelineCreateInfo *info)
          break;
       }
    }
+#endif
 }
 
 /**
@@ -1189,9 +1191,7 @@ anv_pipeline_init(struct anv_pipeline *pipeline,
 {
    VkResult result;
 
-   anv_validate {
-      anv_pipeline_validate_create_info(pCreateInfo);
-   }
+   anv_pipeline_validate_create_info(pCreateInfo);
 
    if (alloc == NULL)
       alloc = &device->alloc;