gitlab-ci.yml: remove flake8/shellcheck (!1853)

.gitlab-ci.yml

@@ -12,7 +12,7 @@ before_script:
   # venv created in CI_PROJECT_DIR for caching
   - "[[ ! -d venv ]] && virtualenv venv -p $(which python3.6)"
   - "source venv/bin/activate"
-  - "pip3 install flake8 pytest-cov python-coveralls pytest"
+  - "pip3 install pytest-cov python-coveralls pytest"
   - "python3 --version"
   - "su pmos -c 'git config --global user.email postmarketos-ci@localhost'"
   - "su pmos -c 'git config --global user.name postmarketOS_CI'"

.gitlab/setup-pmos-environment.sh

@@ -13,7 +13,7 @@ mount -t binfmt_misc none /proc/sys/fs/binfmt_misc
 
 # install dependencies (procps: /bin/kill)
 apt update
-apt install -q -y git sudo shellcheck procps
+apt install -q -y git sudo procps
 pip3 install virtualenv
 
 # create pmos user