Revert "Add ${DESTDIR} to setup.py's --prefix path."
Revert "Add ${DESTDIR} to setup.py's --prefix path."

This reverts commit 65a2074f900dc8b837d9569be038a86a1a6159fe.

twoporeguys/librpc,twoporeguys/librpc,twoporeguys/librpc,twoporeguys/librpc,twoporeguys/librpc,twoporeguys/librpc,twoporeguys/librpc,twoporeguys/librpc