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/_pretty_print.py b/py_gen/templates/_pretty_print.py
index 5d5edee..5709227 100644
--- a/py_gen/templates/_pretty_print.py
+++ b/py_gen/templates/_pretty_print.py
@@ -30,7 +30,7 @@
             with q.indent(2):
                 q.breakable()
 :: 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]
 :: first = True
 :: for m in normal_members:
 :: if not first: