8336152: Remove unused forward declaration in classLoadInfo.hpp

Reviewed-by: dholmes, shade

Author: zhengyu123

src/hotspot/share/classfile/classLoadInfo.hpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -29,8 +29,6 @@
 
 class InstanceKlass;
 
-template <typename T> class GrowableArray;
-
 class ClassInstanceInfo : public StackObj {
  private:
   InstanceKlass* _dynamic_nest_host;