OBSDOCS-152: Clean up unnecessary sections of logging docs

Author: abrennan89

_topic_maps/_topic_map.yml

@@ -2504,26 +2504,6 @@ Topics:
     File: logging-5-7-release-notes
 - Name: Support
   File: cluster-logging-support
-- Name: Logging 5.7
-  Dir: v5_7
-  Distros: openshift-enterprise,openshift-origin
-  Topics:
-  - Name: Administering Logging
-    File: logging-5-7-administration
-#  Name: Logging Reference
-#  File: logging-5-7-reference
-- Name: Logging 5.6
-  Dir: v5_6
-  Distros: openshift-enterprise,openshift-origin
-  Topics:
-  - Name: Administering Logging
-    File: logging-5-6-administration
-- Name: Logging 5.5
-  Dir: v5_5
-  Distros: openshift-enterprise,openshift-origin
-  Topics:
-  - Name: Administering Logging
-    File: logging-5-5-administration
 - Name: About Logging
   File: cluster-logging
 - Name: Installing Logging