Updated travis config

packages/notus/.travis.yml

@@ -3,13 +3,9 @@ language: dart
 dart:
 - dev
 
-before_script:
-- pub global activate coverage
-- pub global activate test_coverage
-
 script:
 - pub run test -r expanded
 - dartfmt -n --set-exit-if-changed lib/
 - dartanalyzer --fatal-infos --fatal-warnings .
-- pub global run test_coverage
+- pub run test_coverage
 - bash <(curl -s https://codecov.io/bash)