Android JNI gen: Don't emit code for empty RegisterNatives()

base/android/jni_generator/testCalledByNatives.golden

Index: base/android/jni_generator/testCalledByNatives.golden
diff --git a/base/android/jni_generator/testCalledByNatives.golden b/base/android/jni_generator/testCalledByNatives.golden
index ab2b35c5141d7978ff11c083d7cfe217d1439dea..dd2d454d605d1b288fea023e9004cd6e70d2fc68 100644
--- a/base/android/jni_generator/testCalledByNatives.golden
+++ b/base/android/jni_generator/testCalledByNatives.golden
@@ -477,11 +477,4 @@ static ScopedJavaLocalRef<jobject> Java_TestJni_getCompressFormatList(JNIEnv*
 
 // Step 3: RegisterNatives.
 
-static bool RegisterNativesImpl(JNIEnv* env) __attribute__((unused));
-static bool RegisterNativesImpl(JNIEnv* env) {
-  if (base::android::IsManualJniRegistrationDisabled()) return true;
-
-  return true;
-}
-
 #endif  // org_chromium_TestJni_JNI