simplify

java-feedback-rascal/src/Assignment01Rules.rsc

@@ -11,14 +11,10 @@ import ClassHierarchy;
 import Util;
 
 set[Message] allAssignment01Rules(M3 model)
-{
-  messages
-    = a01_student(model)
-    + a01_group(model)
-    + a01_io(model)
-    ;
-  return messages;
-}
+  = a01_student(model)
+  + a01_group(model)
+  + a01_io(model)
+  ;
 
 set[Message] a01_student(M3 model) = assertExists(findClass, model, "Student");
 

java-feedback-rascal/src/Assignment04Rules.rsc

@@ -11,14 +11,10 @@ import ImplementsAbstractMethod;
 import Util;
 
 set[Message] allAssignment04Rules(M3 model)
-{
-  errors
-    = a04_question_exists(model)
-    + a04_question_types(model)
-    + a04_implement_abstract_methods(model)
-    ;
-  return errors;
-}
+  = a04_question_exists(model)
+  + a04_question_types(model)
+  + a04_implement_abstract_methods(model)
+  ;
 
 // A class Question should exist, and it should be an abstract class.
 set[Message] a04_question_exists(M3 model)