Remove non needed dep in fixtures

Author: Stephen

.fixtures.yml

@@ -6,7 +6,6 @@ fixtures:
           ref: '0.8.0'
         puppetdb: "git://github.com/puppetlabs/puppetlabs-puppetdb.git"
         inifile: "git://github.com/puppetlabs/puppetlabs-inifile.git"
-        firewall: "git://github.com/puppetlabs/puppetlabs-firewall.git"
         concat: "git://github.com/ripienaar/puppet-concat.git"
         apt: "git://github.com/puppetlabs/puppetlabs-apt.git"
     symlinks: