Remove SkylarkAspectClass.getDefintion.

--
MOS_MIGRATED_REVID=119162307
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/AspectFunction.java b/src/main/java/com/google/devtools/build/lib/skyframe/AspectFunction.java
index aa171b2..d325445 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/AspectFunction.java
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/AspectFunction.java
@@ -140,10 +140,10 @@
         return null;
       }
 
-      aspectFactory = new SkylarkAspectFactory(skylarkAspect.getName(), skylarkAspect);
+      aspectFactory = new SkylarkAspectFactory(skylarkAspect);
       aspect = Aspect.forSkylark(
           skylarkAspect.getAspectClass(),
-          skylarkAspect.getAspectClass().getDefinition(),
+          skylarkAspect.getDefinition(),
           key.getParameters());
     } else {
       throw new IllegalStateException();