Make art_debug_defaults inherit art_defaults.

To take art_defaults closer to a true global defaults used by
everything in the ART module. This also means we unify the compiler
flags for various debug-only things that didn't inherit art_defaults
explicitly.

#codehealth

Test: Run-tests, gtests, libcore tests and libjdwp tests for host and
  device on master-art
Bug: 204364566
Change-Id: Ic76093f104169fc9178c6b6acca6db23d643f9ec
diff --git a/benchmark/Android.bp b/benchmark/Android.bp
index 342fae8..d781f84 100644
--- a/benchmark/Android.bp
+++ b/benchmark/Android.bp
@@ -59,10 +59,7 @@
     name: "libartbenchmark-micronative-host",
     host_supported: true,
     device_supported: false,
-    defaults: [
-        "art_debug_defaults",
-        "art_defaults",
-    ],
+    defaults: ["art_debug_defaults"],
     srcs: [
         "jni_loader.cc",
         "micro-native/micro_native.cc",