ART: Remove RegisterNativeMethods special-casing

Use the regular RegisterNatives, instead. This ensures JNI table
changes work correctly on boot.

This is a minimal change. Cleanup is relegated to a future CL.

Bug: 62065808
Test: m test-art-host
Change-Id: I2d8c76b88f078afbcfe5ff77a7085848bdf2b388
diff --git a/runtime/jni_internal.cc b/runtime/jni_internal.cc
index 2626eef..0fde41b 100644
--- a/runtime/jni_internal.cc
+++ b/runtime/jni_internal.cc
@@ -3057,7 +3057,8 @@
   if (c.get() == nullptr) {
     LOG(FATAL) << "Couldn't find class: " << jni_class_name;
   }
-  JNI::RegisterNativeMethods(env, c.get(), methods, method_count, false);
+  jint jni_result = env->RegisterNatives(c.get(), methods, method_count);
+  CHECK_EQ(JNI_OK, jni_result);
 }
 
 }  // namespace art