Remove unused dependency

Author: bogdandm

requirements.txt

@@ -1,5 +1,4 @@
 python-dateutil==2.7.*
 inflection==0.3.*
 unidecode==1.0.*
-ordered-set==3.0.*
 Jinja2==2.10.*

rest_client_gen/registry.py

@@ -2,8 +2,6 @@
 from itertools import chain, combinations
 from typing import Dict, List, Set, Tuple
 
-from ordered_set import OrderedSet
-
 from .dynamic_typing import BaseType, MetaData, ModelMeta, ModelPtr
 from .utils import Index, distinct_words
 
@@ -12,6 +10,7 @@ class ModelCmp:
     """
     Generic model comparator
     """
+
     def cmp(self, fields_a: set, fields_b: set) -> bool:
         raise NotImplementedError()
 
@@ -172,9 +171,7 @@ def _merge(self, generator, *models: ModelMeta):
         """
         original_fields = list(chain(model.original_fields for model in models))
         originals_names = []
-        fields = OrderedSet()
         for model in models:
-            fields.update(model.type.keys())
             if not model.is_name_generated and model.name:
                 originals_names.append(model.name)
         originals_names = distinct_words(*originals_names)