fix(common.sh): Remove some dead code.
fix(common.sh): Remove some dead code.

fivethreeo/scripts,smilart/scripts,trnubo/scripts,mjg59/scripts,sigma/coreos-scripts,crawford/scripts,andrejro/coreos--scripts,trnubo/scripts,zhang0137/scripts,crawford/scripts,smilart/scripts,fivethreeo/scripts,endocode/scripts,mischief/scripts,nicescale/scripts,BugRoger/scripts,crawford/scripts,fivethreeo/scripts,vmware/coreos-scripts,bcwaldon/coreos-scripts,gtank/scripts,endocode/scripts,sigma/coreos-scripts,trnubo/scripts,zhang0137/scripts,gtank/scripts,vmware/coreos-scripts,BugRoger/scripts,andrejro/coreos--scripts,sigma/coreos-scripts,coreos/scripts,andrejro/coreos--scripts,marineam/coreos-scripts,bcwaldon/coreos-scripts,coreos/scripts,endocode/scripts,vmware/coreos-scripts,smilart/scripts,mischief/scripts,nicescale/scripts,glevand/coreos--scripts,marineam/coreos-scripts,bcwaldon/coreos-scripts,BugRoger/scripts,marineam/coreos-scripts,mischief/scripts,mjg59/scripts,mjg59/scripts,glevand/coreos--scripts,zhang0137/scripts,gtank/scripts,nicescale/scripts