ci: run_tests3.sh is updated (cleanup)

Author: dmitry-lipetsk

run_tests3.sh

@@ -10,12 +10,10 @@ export VIRTUAL_ENV_DISABLE_PROMPT=1
 source "${VENV_PATH}/bin/activate"
 pip install -r tests/requirements.txt
 
-# install testgres' dependencies
-# export PYTHONPATH=$(pwd)
-# $PIP install .
-
+# check code style
 flake8 .
 
+# run builtin tests
 python -m pytest -l -vvv -n 4
 
 set +eux