Don't try to uninstall bundler on appveyor
Don't try to uninstall bundler on appveyor

As of Rubygems 2.7 bundler is a default gem and cannot be uninstalled.

Appveyor recently (11/19) changed and now has bundler as a default gem.

We'll stop stop trying to force a bundler version and track what Ruby gives us.

Signed-off-by: Bryan McLellan <9da9e2973b9c72b95f1bc7169993146760fceeb1@loftninjas.org>

mwrock/chef,chef/chef,nvwls/chef,tomdoherty/chef,mattray/chef,jonlives/chef,tomdoherty/chef,gene1wood/chef,tomdoherty/chef,juliandunn/chef,juliandunn/chef,sanditiffin/chef,mattray/chef,tomdoherty/chef,nvwls/chef,Ppjet6/chef,higanworks/chef,mwrock/chef,sanditiffin/chef,nvwls/chef,MsysTechnologiesllc/chef,higanworks/chef,Ppjet6/chef,Ppjet6/chef,MsysTechnologiesllc/chef,mwrock/chef,nathwill/chef,Ppjet6/chef,MsysTechnologiesllc/chef,Tensibai/chef,mattray/chef,nathwill/chef,higanworks/chef,nathwill/chef,jaymzh/chef,martinisoft/chef,tas50/chef-1,mattray/chef,nathwill/chef,chef/chef,juliandunn/chef,higanworks/chef,mattray/chef,higanworks/chef,nvwls/chef,Ppjet6/chef,nvwls/chef,martinisoft/chef,mwrock/chef,jaymzh/chef,tomdoherty/chef,tas50/chef-1,martinisoft/chef,jonlives/chef,sanditiffin/chef,chef/chef,sanditiffin/chef,sanditiffin/chef,MsysTechnologiesllc/chef,jonlives/chef,gene1wood/chef,jonlives/chef,jaymzh/chef,Ppjet6/chef,martinisoft/chef,jonlives/chef,nathwill/chef,tas50/chef-1,juliandunn/chef,jaymzh/chef,juliandunn/chef,chef/chef,Tensibai/chef,sanditiffin/chef,gene1wood/chef,jonlives/chef,nvwls/chef,Tensibai/chef,martinisoft/chef,gene1wood/chef,nathwill/chef,Tensibai/chef,tas50/chef-1,Tensibai/chef