remove host git.tcpcloud.eu from known_hosts

This host should no longer be necessary.

Change-Id: I247c8000dd0e3df9c739cf04fe33c5a89843c225
diff --git a/openssh/client/lab.yml b/openssh/client/lab.yml
index 26ac7f4..7a65847 100644
--- a/openssh/client/lab.yml
+++ b/openssh/client/lab.yml
@@ -38,13 +38,6 @@
           enabled: true
           user: ${linux:system:user:root}
           private_key: ${private_keys:lab}
-          known_hosts:
-          - ${known_hosts:git.tcpcloud.eu}
-  known_hosts:
-    git.tcpcloud.eu:
-      name: git.tcpcloud.eu
-      type: ecdsa
-      fingerprint: fc:77:72:6c:65:c0:e1:26:0d:68:b8:a8:4a:56:38:22
   private_keys:
     lab:
       type: rsa