pyloxi: remove 'skip' field from Member

The other member types catch the ones that would previously set this flag.

The type fields of instructions, action_ids, etc still aren't populated.
diff --git a/py_gen/templates/_ofclass.py b/py_gen/templates/_ofclass.py
index 03fe837..8c21bb3 100644
--- a/py_gen/templates/_ofclass.py
+++ b/py_gen/templates/_ofclass.py
@@ -1,5 +1,5 @@
 :: from py_gen.codegen import Member, LengthMember, TypeMember
-:: normal_members = [m for m in ofclass.members if type(m) == Member and not m.skip]
+:: normal_members = [m for m in ofclass.members if type(m) == Member]
 class ${ofclass.pyname}(${superclass}):
 :: for m in ofclass.type_members:
     ${m.name} = ${m.value}