Remove translation sections from setup.cfg

These translation sections are not needed anymore, Babel can
generate translation files without them.

Change-Id: I720de9fc3d005731cd7ba49027544e8ba61e589c

babel.cfg

-[python: **.py]
-

setup.cfg

@@ -28,17 +28,3 @@ packages =
 [entry_points]
 oslo.config.opts =
     oslo.versionedobjects = oslo_versionedobjects._options:list_opts
-
-[compile_catalog]
-directory = oslo_versionedobjects/locale
-domain = oslo_versionedobjects
-
-[update_catalog]
-domain = oslo_versionedobjects
-output_dir = oslo_versionedobjects/locale
-input_file = oslo_versionedobjects/locale/oslo_versionedobjects.pot
-
-[extract_messages]
-keywords = _ gettext ngettext l_ lazy_gettext
-mapping_file = babel.cfg
-output_file = oslo_versionedobjects/locale/oslo_versionedobjects.pot