pytest is installed with taospy

[jond01]

pytest-cov is listed in the direct dependencies of taospy:

taos-connector-python/pyproject.toml

Line 25 in 97c79a9

pytest-cov = "^4.0.0"

pytest-cov depends on pytest.

These dependencies are not desired as a part of a production environment and should move to the dev dependencies exclusively:

taos-connector-python/pyproject.toml

Line 35 in 97c79a9

[tool.poetry.dev-dependencies]

Originally posted by @jond01 in #136 (comment)