Unify comments style

- Change /* comments */ to // comments
- Re-generate auto-generated files
- Remove legacy unused GEMMINC SSE micro-kernels

PiperOrigin-RevId: 271901989
diff --git a/src/xnnpack/operator.h b/src/xnnpack/operator.h
index a34d6fd..62f956a 100644
--- a/src/xnnpack/operator.h
+++ b/src/xnnpack/operator.h
@@ -155,7 +155,7 @@
   size_t slice_height;
   size_t indirection_y_stride;
   size_t indirection_x_stride;
-  /* kernel_size * mr * sizeof(void*) */
+  // scaled_kernel_size := kernel_size * mr * sizeof(void*).
   size_t scaled_kernel_size;
 };