Always use the full attribute expression in the AttributeNode image

This is more consistent considering attributes can contain arbitrary
expressions. There was never any real reason to exclude the argument
list from these node images.

Author: cirras

delphi-frontend/src/main/java/au/com/integradev/delphi/antlr/ast/node/AttributeNodeImpl.java

@@ -91,16 +91,10 @@ public NameOccurrence getConstructorNameOccurrence() {
 
   @Override
   public String getImage() {
-    DelphiNode imageNode = getNameReference();
-    if (imageNode == null) {
-      imageNode = getExpression();
-    }
-
-    String image = imageNode.getImage();
+    String image = getExpression().getImage();
     if (isAssembly()) {
       image = "assembly : " + image;
     }
-
     return image;
   }