Fix duplicated words issue like "if we are are here"

This is to fix the duplicated words issue like
"if we are are here it means that".

Change-Id: I2365241b9f41368754ffd31aba0f760010aff6f2

rally/cli/commands/deployment.py

@@ -86,7 +86,7 @@ class DeploymentCommands(object):
             result = env_mgr.EnvManager.create_spec_from_sys_environ()
             config = result["spec"]
             if "existing@openstack" in config:
-                # NOTE(andreykurilin): if we are are here it means that
+                # NOTE(andreykurilin): if we are here it means that
                 #   rally-openstack package is installed
                 import rally_openstack
                 if rally_openstack.__version_tuple__ <= (1, 4, 0):

rally/env/env_mgr.py

@@ -104,7 +104,7 @@ class EnvManager(object):
     information about tested platforms.
 
     Env manager is using platform plugins to: create, delete, cleanup,
-    check health, obtain information about about platforms.
+    check health, obtain information about platforms.
 
     Every Env has:
     - unique name and UUID