Guard all injection features behind a global flag

native/jni/include/daemon.hpp

@@ -51,6 +51,8 @@ void su_daemon_handler(int client, ucred *credential);
 void auto_start_magiskhide(bool late_props);
 int stop_magiskhide();
 
+#if ENABLE_INJECT
 // For injected process to access daemon
 int remote_check_hide(int uid, const char *process);
 void remote_request_hide();
+#endif