diff --git a/tools/spec.py b/tools/spec.py
index 9fe8bca..e101a4d 100644
--- a/tools/spec.py
+++ b/tools/spec.py
@@ -197,25 +197,6 @@ class Bitmask(Type):
     def define(self, reg: Registry):
         return self.declare()
 
-        if not self.requires:
-            return self.declare()
-
-        return "using %(name)s = %(requires)s;" % {
-            "name": self.name,
-            "requires": self.requires
-        }
-
-        source = reg.types[self.requires]
-        members = ["%(k)s = %(v)s" % {"k":k, "v":v.value} for (k,v) in source.values.items()]
-
-        return """enum %(name)s : %(type)s {
-            %(members)s
-        }""" % {
-            "name": self.name,
-            "type": self.type,
-            "members": ",\n".join(members)
-        }
-
 
 ###############################################################################
 class Handle(Type):
@@ -281,9 +262,6 @@ class Enum(Type):
 
     def declare(self):
         return ""
-        return "enum %(name)s : int32_t;" % {
-            "name": self.name
-        }
 
     def define(self, reg: Registry):
         values = ("%(name)s = %(value)s" % {"name": k, "value": v.value} for (k, v) in self.values.items())