Drop obsoleted comment.

stack/erp5.cfg

@@ -233,7 +233,6 @@ repository = http://git.erp5.org/repos/erp5.git
 branch = master
 revision =
 command = ${git:location}/bin/git clone --quiet --branch ${:branch} ${:repository} ${:location} && if [ -n "${:revision}" ]; then cd ${:location} && ${git:location}/bin/git reset --quiet --hard ${:revision} ; fi
-# ls information added in order to debug .git disappearing
 update-command = cd ${:location} && ${git:location}/bin/git pull && if [ -n "${:revision}" ]; then echo "Resetting." ; cd ${:location} && ${git:location}/bin/git reset --hard ${:revision} ; fi
 
 [products]