Remove erroneous override modifier in aidl_test_service.cpp

Bug: None
Test: Compiles, unittests pass

Change-Id: I7c5dc55f948e9b759b698e1d2896b3929e75fa8e
diff --git a/tests/aidl_test_service.cpp b/tests/aidl_test_service.cpp
index 11222fc..ec5b001 100644
--- a/tests/aidl_test_service.cpp
+++ b/tests/aidl_test_service.cpp
@@ -159,7 +159,7 @@
   template<typename T>
   status_t ReverseArray(const vector<T>& input,
                         vector<T>* repeated,
-                        vector<T>* _aidl_return) override {
+                        vector<T>* _aidl_return) {
     ALOGI("Reversing array of length %zu", input.size());
     *repeated = input;
     *_aidl_return = input;