Remove some sort of rakudobrew bug workaround

By what it does, sounds like there was never any bug but someone
simply forgot to run `rakudobrew rehash`. The added path is no
longer even there, so out this goes.

Author: zoffixznet

util/update-and-sync

@@ -2,8 +2,6 @@
 # this script is used on hack.p6c.org as the 'doc.perl6.org' user to update
 # the website.
 source /home/rakudobrew/.rakudobrew-bash
-# workaround for bug in rakudobrew
-PATH="$PATH:/home/rakudobrew/rakudobrew/moar-2016.06/install/share/perl6/site/bin"
 set -e
 set -x
 cd ~/doc