Revert "fix centering of elm wayland windows"

This reverts commit 1ec2a4e91c.

this may have fixed wayland window centering, but only because it effectively turns the function into a no-op instead of actually centering the window

src/bin/e_win.c

@@ -117,7 +117,7 @@ _e_elm_win_trap_show(void *data, Evas_Object *o)
         ctx->visible = 1;
         evas_object_show(ctx->client->frame);
      }
-   if (ctx->centered) e_comp_object_util_center(o);
+   if (ctx->centered) e_comp_object_util_center(ctx->client->frame);
    return EINA_TRUE;
 }