[gitlab-ci] Remove browser-tests

.gitlab-ci.yml

 include: 'https://gitlab.idiap.ch/bob/bob.devtools/raw/master/bob/devtools/data/gitlab-ci/single-package.yaml'
-
-# Redefines the pipeline order for this package only
-stages:
-  - build
-  - browser-tests
-  - deploy
-  - pypi
-
-# Docker host based testing (must be run inside dind or docker-enabled host)
-browser_test:
-  extends: .test_linux_template
-  stage: browser-tests
-  image: docker.idiap.ch/beat/ci.env.editor:0.0.1r0
-  variables:
-    BEAT_BROWSER_TESTS: "true"
-    LANG: "en_US.UTF-8"
-    LANGUAGE: "en_US:en"
-    LC_ALL: "en_US.UTF-8"
-  dependencies:
-    - build_linux_36
-  before_script:
-    - apt-get update > /dev/null
-    - apt-get install -y locales > /dev/null
-    - echo "en_US UTF-8" > /etc/locale.gen
-    - locale-gen en_US.UTF-8
-    - rm -rf ${CI_PROJECT_DIR}/sphinx