remove gh-pages step from release task
remove gh-pages step from release task

use readthedocs now

swn1/pyzmq,Mustard-Systems-Ltd/pyzmq,yyt030/pyzmq,ArvinPan/pyzmq,Mustard-Systems-Ltd/pyzmq,dash-dash/pyzmq,caidongyun/pyzmq,caidongyun/pyzmq,swn1/pyzmq,yyt030/pyzmq,Mustard-Systems-Ltd/pyzmq,dash-dash/pyzmq,ArvinPan/pyzmq,caidongyun/pyzmq,swn1/pyzmq,yyt030/pyzmq,ArvinPan/pyzmq,dash-dash/pyzmq