Remove translation logging prefixes from i18n

Related-Bug: #1694193

Change-Id: I3c2ab7e1838dc750f201f4bdf0063f5526885d09

barbican/i18n.py

@@ -16,15 +16,5 @@ import oslo_i18n as i18n
 
 _translators = i18n.TranslatorFactory(domain='barbican')
 
-# The primary translation function using the well-known name "_"
+# The translation function using the well-known name "_"
 _ = _translators.primary
-
-# Translators for log levels.
-#
-# The abbreviated names are meant to reflect the usual use of a short
-# name like '_'. The "L" is for "log" and the other letter comes from
-# the level.
-_LI = _translators.log_info
-_LW = _translators.log_warning
-_LE = _translators.log_error
-_LC = _translators.log_critical