Remove unused function. Fix: re.sub return value
Remove unused function.
Fix: re.sub return value

chubbymaggie/angr,tyb0807/angr,chubbymaggie/angr,f-prettyland/angr,f-prettyland/angr,tyb0807/angr,schieb/angr,schieb/angr,angr/angr,schieb/angr,chubbymaggie/simuvex,axt/angr,iamahuman/angr,angr/angr,chubbymaggie/simuvex,iamahuman/angr,angr/angr,iamahuman/angr,axt/angr,f-prettyland/angr,tyb0807/angr,chubbymaggie/angr,axt/angr,zhuyue1314/simuvex,chubbymaggie/simuvex,angr/simuvex