[TASK] Remove localhost ssh config

as local replication is done without ssh

assets/ssh/config

@@ -3,12 +3,6 @@ Host github.com
   IdentityFile /var/gerrit/.ssh/replication_github.com
   PreferredAuthentications publickey
 
-Host localhost
-  User git
-  IdentityFile /var/gerrit/.ssh/replication_localhost
-  PreferredAuthentications publickey
-  Hostname localhost
-
 Host git.typo3.org
   User git
   IdentityFile /var/gerrit/.ssh/replication_git.typo3.org