[ci] Removed branched openwisp-utils

Author: nemesifier

.github/workflows/ci.yml

@@ -54,7 +54,6 @@ jobs:
           pip install -U pip wheel setuptools
           pip install -U -r requirements-test.txt
           pip install -U -e .
-          pip install -U --force-reinstall --no-deps https://github.com/openwisp/openwisp-utils/tarball/extendable-submit-line
           pip install -U --force-reinstall --no-deps https://github.com/openwisp/openwisp-controller/tarball/issues/625-device-deactivation
           pip install ${{ matrix.django-version }}
           sudo npm install -g jshint stylelint