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/requantization-stubs.h b/src/xnnpack/requantization-stubs.h
index ee6e86d..cfeaed6 100644
--- a/src/xnnpack/requantization-stubs.h
+++ b/src/xnnpack/requantization-stubs.h
@@ -65,5 +65,5 @@
 DECLARE_REQUANTIZATION_FUNCTION(xnn_requantize_gemmlowp__neon)
 
 #ifdef __cplusplus
-} /* extern "C" */
+}  // extern "C"
 #endif