Remove libxml dependencies (EFForg#15790)

gloomy-ghost · Hainish · commit 729d7aa0ead5 · 2018-08-21T18:11:52.000-07:00
It was used for xml linting but seems like it's no longer the case
diff --git a/test/setup_travis.sh b/test/setup_travis.sh
@@ -19,10 +19,6 @@ function setup_firefox {
     wget -O /tmp/geckodriver.tar.gz ${url}
     sudo tar -xvf /tmp/geckodriver.tar.gz -C /usr/local/bin/
     sudo chmod a+x /usr/local/bin/geckodriver
-
-    # ./make.sh requires xmllint
-    sudo apt-get -qq update
-    sudo apt-get install -y libxml2-utils
 }
 
 function browser_setup {
