Do not try to delete a global handle with the local handles APIs (#13640

)

Motivation:

The code introduced as part of
#13480 contained a bug which could
crash the JVM. This only manifested in JDK21+ as earlier versions did
not contain the related assert.

Modifications:

Remove left-over call that could crash the JVM

Result:

Correct code that also works on JDK21

transport-native-epoll/src/main/c/netty_epoll_linuxsocket.c

@@ -873,7 +873,6 @@ jint netty_epoll_linuxsocket_JNI_OnLoad(JNIEnv* env, const char* packagePrefix)
     NETTY_JNI_UTIL_LOAD_CLASS_WEAK(env, peerCredentialsClassWeak, nettyClassName, done);
     NETTY_JNI_UTIL_NEW_LOCAL_FROM_WEAK(env, peerCredentialsClass, peerCredentialsClassWeak, done);
 
-    NETTY_JNI_UTIL_LOAD_CLASS(env, peerCredentialsClass, nettyClassName, done);
     netty_jni_util_free_dynamic_name(&nettyClassName);
 
     NETTY_JNI_UTIL_GET_METHOD(env, peerCredentialsClass, peerCredentialsMethodId, "<init>", "(II[I)V", done);