util/packer: Remove dhclient pre-up sleep patch
util/packer: Remove dhclient pre-up sleep patch

This was causing the network to not come up with errors like the
following in the boot log:

cloud-init-nonet [20.93] waiting 120 seconds network device
cloud-init-nonet [148.93] gave up waiting for network device

Signed-off-by: Lewis Marshall <748e1641a368164906d4a0c0e3965345453dcc93@lmars.net>

technosophos/flynn,mubassirhayat/flynn,kgrz/flynn,clifff/flynn,pkdevbox/flynn,TribeMedia/flynn,josephglanville/flynn,tonicbupt/flynn,pkdevbox/flynn,supermario/flynn,ozum/flynn,rikur/flynn,clifff/flynn,lmars/flynn,schatt/flynn,pkdevbox/flynn,pkdevbox/flynn,rikur/flynn,TribeMedia/flynn,ozum/flynn,GrimDerp/flynn,technosophos/flynn,technosophos/flynn,felixrieseberg/flynn,justintung/flynn,benbjohnson/flynn,flynn/flynn,benbjohnson/flynn,kgrz/flynn,josephglanville/flynn,philiplb/flynn,Brandywine2161/flynn,arekkas/flynn,jzila/flynn,justintung/flynn,jzila/flynn,GrimDerp/flynn,Brandywine2161/flynn,rikur/flynn,shads196770/flynn,clifff/flynn,GrimDerp/flynn,felixrieseberg/flynn,pkdevbox/flynn,shads196770/flynn,ozum/flynn,shads196770/flynn,lmars/flynn,lmars/flynn,kgrz/flynn,josephglanville/flynn,benbjohnson/flynn,flynn/flynn,arekkas/flynn,tonicbupt/flynn,mubassirhayat/flynn,schatt/flynn,philiplb/flynn,benbjohnson/flynn,felixrieseberg/flynn,Brandywine2161/flynn,shads196770/flynn,clifff/flynn,rikur/flynn,arekkas/flynn,TribeMedia/flynn,josephglanville/flynn,supermario/flynn,supermario/flynn,kgrz/flynn,felixrieseberg/flynn,felixrieseberg/flynn,jzila/flynn,supermario/flynn,rikur/flynn,shads196770/flynn,schatt/flynn,philiplb/flynn,GrimDerp/flynn,jzila/flynn,tonicbupt/flynn,arekkas/flynn,Brandywine2161/flynn,GrimDerp/flynn,supermario/flynn,mubassirhayat/flynn,pkdevbox/flynn,josephglanville/flynn,technosophos/flynn,schatt/flynn,TribeMedia/flynn,kgrz/flynn,benbjohnson/flynn,whouses/flynn,flynn/flynn,whouses/flynn,whouses/flynn,tonicbupt/flynn,jzila/flynn,philiplb/flynn,lmars/flynn,mubassirhayat/flynn,kgrz/flynn,TribeMedia/flynn,jzila/flynn,justintung/flynn,lmars/flynn,GrimDerp/flynn,flynn/flynn,schatt/flynn,Brandywine2161/flynn,justintung/flynn,ozum/flynn,whouses/flynn,technosophos/flynn,arekkas/flynn,josephglanville/flynn,Brandywine2161/flynn,whouses/flynn,clifff/flynn,whouses/flynn,rikur/flynn,schatt/flynn,justintung/flynn,clifff/flynn,TribeMedia/flynn,supermario/flynn,ozum/flynn,benbjohnson/flynn,shads196770/flynn,tonicbupt/flynn,justintung/flynn,ozum/flynn,philiplb/flynn,flynn/flynn