Remove workaround for SQLAlchemy < 1.4

This is no longer needed as our minimum is 1.4.13.

Change-Id: I946a790f3461f1cf76a49c18596cc0a6f8058f6c
Signed-off-by: Stephen Finucane <[email protected]>

Author: stephenfin

nova/cmd/manage.py

@@ -752,15 +752,7 @@ def cell0_default_connection():
             # worry about parsing and splitting a URL which could have special
             # characters in the password, which makes parsing a nightmare.
             url = sqla_url.make_url(connection)
-
-            # TODO(gibi): remove hasattr() conditional in favor of "url.set()"
-            # when SQLAlchemy 1.4 is the minimum version in requirements
-            if hasattr(url, "set"):
-                url = url.set(database=url.database + '_cell0')
-            else:
-                # TODO(zzzeek): remove when SQLAlchemy 1.4
-                # is the minimum version in requirements
-                url.database = url.database + '_cell0'
+            url = url.set(database=url.database + '_cell0')
 
             return urlparse.unquote(str(url))