Use correct i18n module

wrong_layout/manifest.ini

@@ -1,7 +1,7 @@
 [info]
 name: Wrong Layout
 short_name: wrong_layout
-version: 1.2.1
+version: 1.2.2
 description: Press alt+r to convert chars typed in wrong layout Rus<>Eng
 authors: Denis Fomin <fominde@gmail.com>
 homepage: https://dev.gajim.org/gajim/gajim-plugins/wikis/WrongLayoutPlugin

wrong_layout/plugin.py

@@ -5,12 +5,8 @@ from gajim.common import app
 
 from gajim.plugins import GajimPlugin
 from gajim.plugins.helpers import log_calls
+from gajim.plugins.plugins_i18n import _
 
-# Since Gajim 1.1.0 _() has to be imported
-try:
-    from gajim.common.i18n import _
-except ImportError:
-    pass
 
 class WrongLayoutPlugin(GajimPlugin):
     @log_calls('WrongLayoutPlugin')