mctp-controller-init: Remove mctp link mtu being set to 68 Remove mctp link mtu being set to 68 to let it default to max Fusion-Link: fusion2,n/a Tested: https://paste.googleplex.com/4837786447380480 Google-Bug-Id: b/524781293 Change-Id: I71b634d5b380c032c86da4c1eaed4fe8fd844994 Signed-off-by: Agrim Bharat <agrimbharat@google.com>