Move Java array prints into aidl_to_java.

Since it is annoying to try to remember to print them.

I've found ast_java is one of the big sources of leaks in AIDL, so I'm
trying to rewrite it, and I noticed this.

Bug: N/A
Test: ./runtests.sh
Change-Id: Ibf80fa58e922b522d2e39b3e259c2a166ce61ea7
diff --git a/aidl_to_java.cpp b/aidl_to_java.cpp
index f1ba228..298b25a 100644
--- a/aidl_to_java.cpp
+++ b/aidl_to_java.cpp
@@ -63,8 +63,6 @@
     if (instantiable_m.find(aidl_name) != instantiable_m.end()) {
       return instantiable_m[aidl_name];
     }
-    CHECK(!AidlTypenames::IsBuiltinTypename(aidl_name));
-    return aidl_name;
   }
 
   // map from AIDL built-in type name to the corresponding Java type name
@@ -113,7 +111,7 @@
 }  // namespace
 
 string JavaSignatureOf(const AidlTypeSpecifier& aidl) {
-  return JavaSignatureOfInternal(aidl, false, true);
+  return JavaSignatureOfInternal(aidl, false, false);
 }
 
 string InstantiableJavaSignatureOf(const AidlTypeSpecifier& aidl) {