Remove unused function and clean up FAKECHROOT_* variables at prepare
Remove unused function and clean up FAKECHROOT_* variables at prepare

giuliolunati/fakechroot,solderzzc/fakechroot,solderzzc/fakechroot,solderzzc/fakechroot,andrewgregory/fakechroot,solderzzc/fakechroot,andrewgregory/fakechroot,andrewgregory/fakechroot,solderzzc/fakechroot,giuliolunati/fakechroot,giuliolunati/fakechroot