Travis: Use `-Werror` compiler flag again
@@ -190,7 +190,6 @@ matrix:
env:
# Unfortunately the tests for the Xerces plugin fail: https://travis-ci.org/ElektraInitiative/libelektra/jobs/483331657#L3740
- PLUGINS='ALL;-xerces'
- - COMMON_FLAGS=''
# HASKELL: Only build Haskell binding and plugin
