Remove support for MOS 6.1

Change-Id: I62201ca3db7f33df0b02c88245426ef41d4fc8e2

metadata.yaml

@@ -7,7 +7,7 @@ version: 0.8.0
 # Description
 description: Collect logs, metrics and notifications from system and OpenStack services and forward that information to external backends such as Elasticsearch and InfluxDB.
 # Required fuel version
-fuel_version: ['6.1', '7.0']
+fuel_version: ['7.0']
 
 authors: [Mirantis Inc.]
 licenses: [Apache License Version 2.0]
@@ -21,16 +21,6 @@ releases:
     mode: ['ha']
     deployment_scripts_path: deployment_scripts/
     repository_path: repositories/ubuntu
-  - os: ubuntu
-    version: 2014.2-6.1
-    mode: ['ha', 'multinode']
-    deployment_scripts_path: deployment_scripts/
-    repository_path: repositories/ubuntu
-  - os: centos
-    version: 2014.2-6.1
-    mode: ['ha', 'multinode']
-    deployment_scripts_path: deployment_scripts/
-    repository_path: repositories/centos
 
 # Version of plugin package
 package_version: '2.0.0'