Remove the direct dependency to oslo.i18n

We do not use this library.

Change-Id: I0ef98a9e8b67a96b42889d7c9729dd6f3fe1a837

rally/common/i18n.py

@@ -16,8 +16,6 @@ See https://docs.openstack.org/oslo.i18n/latest/user/usage.html .
 
 """
 
-import oslo_i18n
-
 from rally.common import logging
 
 LOG = logging.getLogger(__name__)
@@ -25,17 +23,19 @@ LOG.warning("rally.common.i18n module is deprecated and is going to be "
             "removed. Please do not import it.")
 
 
-_translators = oslo_i18n.TranslatorFactory(domain="rally")
+def _do_nothing(msg):
+    return msg
+
 
 # The primary translation function using the well-known name "_"
-_ = _translators.primary
+_ = _do_nothing
 
 # 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
+_LI = _do_nothing
+_LW = _do_nothing
+_LE = _do_nothing
+_LC = _do_nothing

requirements.txt

@@ -10,7 +10,6 @@ jsonschema>=2.0.0,!=2.5.0,<3.0.0                       # MIT
 netaddr>=0.7.13,!=0.7.16,<=0.7.19                      # BSD
 oslo.config>=4.0.0,!=4.3.0,!=4.4.0,<=4.12.0            # Apache Software License
 oslo.db>=4.24.0,<=4.26.0                               # Apache Software License
-oslo.i18n>=2.1.0,!=3.15.2,<=3.17.0                     # Apache Software License
 oslo.log==3.30.0                                       # Apache Software License
 oslo.serialization>=1.10.0,!=2.19.1,<=2.20.0           # Apache Software License
 oslo.utils>=3.20.0,<=3.29.0                            # Apache Software License