Revert "Support enum constants."

This reverts commit ed5af14.

Author: robrix

languages/tree-sitter-stack-graphs-java/src/stack-graphs.tsg

@@ -762,11 +762,11 @@ attribute node_symbol = node            => symbol = (source-text node), source_n
   attr (implicit_this__typeof) push_symbol = ":"
   edge implicit_this -> @ident.lexical_scope
 
-  node @ident.ref
-  attr (@ident.ref) node_reference = @ident
-  edge @ident.ref -> @ident.lexical_scope
-  attr (@ident.ref -> @ident.lexical_scope) precedence = 1
-  edge @ident.ref -> member
+  node ref
+  attr (ref) node_reference = @ident
+  edge ref -> @ident.lexical_scope
+  attr (ref -> @ident.lexical_scope) precedence = 1
+  edge ref -> member
 
   attr (member) push_symbol = "."
 
@@ -777,22 +777,22 @@ attribute node_symbol = node            => symbol = (source-text node), source_n
   edge @ident.type -> ref__typeof
 
   attr (ref__typeof) push_symbol = ":"
-  edge ref__typeof -> @ident.ref
+  edge ref__typeof -> ref
 }
 
 (field_access
   object: (_) @object
   field: (identifier) @identifier) @field_access {
-  node @field_access.member
+  node member
 
   edge @object.lexical_scope -> @field_access.lexical_scope
 
   node ref
   attr (ref) node_reference = @identifier
-  edge ref -> @field_access.member
+  edge ref -> member
 
-  attr (@field_access.member) push_symbol = "."
-  edge @field_access.member -> @object.type
+  attr (member) push_symbol = "."
+  edge member -> @object.type
 
   node ref__typeof
   edge @field_access.type -> ref__typeof
@@ -801,13 +801,6 @@ attribute node_symbol = node            => symbol = (source-text node), source_n
   edge ref__typeof -> ref
 }
 
-(field_access
-  object: (identifier) @type ; this might represent a type identifier in the case of static member access
-  field: (identifier) @identifier) @this {
-  ; allow resolution of A.X to static members of lexically-scoped A
-  edge @this.member -> @type.ref
-}
-
 (method_invocation) @method_invocation
 {
   node @method_invocation.before_scope