[cleanup] remove unused config

ssh-agent.service

@@ -1,15 +0,0 @@
-# Requires SSH_AUTH_SOCK="$XDG_RUNTIME_DIR/ssh-agent.socket"
-[Unit]
-ConditionEnvironment=!SSH_AGENT_PID
-Description=OpenSSH key agent
-Documentation=man:ssh-agent(1) man:ssh-add(1) man:ssh(1)
-
-[Service]
-Environment=SSH_AUTH_SOCK=%t/ssh-agent.socket
-ExecStart=/usr/bin/ssh-agent -a $SSH_AUTH_SOCK
-PassEnvironment=SSH_AGENT_PID
-SuccessExitStatus=2
-Type=forking
-
-[Install]
-WantedBy=default.target