tests: fix display, the return 2

BoboTiG · BoboTiG · commit 847735b089e9 · 2016-10-07T13:58:36.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -16,7 +16,7 @@ before_install:
 install:
   - python setup.py install
 
-script: py.test --display=":99.0"
+script: py.test
 
 matrix:
     fast_finish: true
