intel: Drop check for wrapped_depth in RB mapping.

This used to be needed because irb->mt would be unset for fake packed
depth/stencil, but no longer.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/mesa/drivers/dri/intel/intel_fbo.c

@@ -122,7 +122,7 @@ intel_map_renderbuffer(struct gl_context *ctx,
    int stride;
 
    /* We sometimes get called with this by our intel_span.c usage. */
-   if (!irb->mt && !irb->wrapped_depth) {
+   if (!irb->mt) {
       *out_map = NULL;
       *out_stride = 0;
       return;