Remove unnecessary Travis options
Remove unnecessary Travis options

electrum/airlift,dain/airlift,electrum/airlift,airlift/airlift,johngmyers/airlift,electrum/airlift,airlift/airlift,dain/airlift,johngmyers/airlift,dain/airlift,electrum/airlift,airlift/airlift,johngmyers/airlift,airlift/airlift,johngmyers/airlift,dain/airlift