Enable modernize-use-nodiscard and modernize-use-override.

The two flags were disabled due to failing on AIDL generated files.
Enabling them now as there are no more issues with the auto generated files.

Bug: 186572209
Test: make
Change-Id: If6eebbb3a1524ac68837900315cbc640f038f343
diff --git a/media/libaaudio/src/Android.bp b/media/libaaudio/src/Android.bp
index 886603d..728de2b 100644
--- a/media/libaaudio/src/Android.bp
+++ b/media/libaaudio/src/Android.bp
@@ -41,10 +41,10 @@
     "modernize-use-emplace",
     "modernize-use-equals-default",
     "modernize-use-equals-delete",
-    // "modernize-use-nodiscard", // found in aidl generated files
+    "modernize-use-nodiscard",
     "modernize-use-noexcept",
     "modernize-use-nullptr",
-    // "modernize-use-override", // found in aidl generated files
+    "modernize-use-override",
     // "modernize-use-trailing-return-type", // not necessarily more readable
     "modernize-use-transparent-functors",
     "modernize-use-uncaught-exceptions",