Remove unused versions pipeline from PasteDeploy config

Since the version negotiation middleware was introduced, versions
pipeline app in the config is unused. Consequently, the versions
app factory is unused too.

Change-Id: I2d50432de215e51c1e52f8d68eaa0820e9b5bd0b

etc/glance-api.conf

@@ -203,12 +203,6 @@ pipeline = versionnegotiation context apiv1app
 # NOTE: use the following pipeline for keystone auth (with caching)
 # pipeline = versionnegotiation authtoken auth-context cachemanage apiv1app
 
-[pipeline:versions]
-pipeline = versionsapp
-
-[app:versionsapp]
-paste.app_factory = glance.api.versions:app_factory
-
 [app:apiv1app]
 paste.app_factory = glance.api.v1:app_factory
 

glance/api/versions.py

@@ -24,8 +24,6 @@ import json
 
 import webob.dec
 
-from glance.common import wsgi
-
 
 class Controller(object):
 
@@ -67,10 +65,3 @@ class Controller(object):
     def get_href(self):
         return "http://%s:%s/v1/" % (self.options['bind_host'],
                                       self.options['bind_port'])
-
-
-def app_factory(global_conf, **local_conf):
-    """paste.deploy app factory for creating Glance API versions apps"""
-    conf = global_conf.copy()
-    conf.update(local_conf)
-    return Controller(conf)

glance/tests/functional/__init__.py

@@ -216,12 +216,6 @@ image_cache_driver = %(image_cache_driver)s
 [pipeline:glance-api]
 pipeline = versionnegotiation context %(cache_pipeline)s apiv1app
 
-[pipeline:versions]
-pipeline = versionsapp
-
-[app:versionsapp]
-paste.app_factory = glance.api.versions:app_factory
-
 [app:apiv1app]
 paste.app_factory = glance.api.v1:app_factory