Revert 8552 (#8661)

Author: tomchristie

rest_framework/management/commands/generateschema.py

@@ -26,7 +26,6 @@ def add_arguments(self, parser):
         parser.add_argument('--urlconf', dest="urlconf", default=None, type=str)
         parser.add_argument('--generator_class', dest="generator_class", default=None, type=str)
         parser.add_argument('--file', dest="file", default=None, type=str)
-        parser.add_argument('--version', dest="version", default='', type=str)
 
     def handle(self, *args, **options):
         if options['generator_class']:
@@ -38,7 +37,6 @@ def handle(self, *args, **options):
             title=options['title'],
             description=options['description'],
             urlconf=options['urlconf'],
-            version=options['version'],
         )
         schema = generator.get_schema(request=None, public=True)
         renderer = self.get_renderer(options['format'])