Revert "TT#76661 ssh_wrapper: explicitly disable ControlMaster when SSH-ing"

This reverts commit 81fc3d2433.
This doesn't fix our issue, so revert this unncessary change
which might actually slow down SSH connections.

Change-Id: Ib6b2fdb81ce471d457788239468fb53ab75fbe1e

ec2-create-ce

@@ -63,8 +63,6 @@ ssh_wrapper() {
   # shellcheck disable=SC2029
   ssh -o "ServerAliveInterval 10" \
     -o "ConnectTimeout 15" \
-    -o "ControlMaster=no" \
-    -o "ControlPath=none" \
     -o "StrictHostKeyChecking=no" \
     -o "UserKnownHostsFile=/dev/null" \
     -i "${KEY_FILE}" \