test!: remove global registration of pytest plugins

Instead a conftest.py close to the test files needs
to opt into using plugin hooks and fixtures.

also remove some packaging leftover with initenv.sh

chatmaild/pyproject.toml

@@ -27,9 +27,6 @@ chatmail-quota-expire = "chatmaild.expire:quota_expire_main"
 chatmail-fsreport = "chatmaild.fsreport:main"
 lastlogin = "chatmaild.lastlogin:main"
 
-[project.entry-points.pytest11]
-"chatmaild.testplugin" = "chatmaild.tests.plugin"
-
 [tool.pytest.ini_options]
 addopts = "-v -ra --strict-markers"
 log_format = "%(asctime)s %(levelname)s %(message)s"

chatmaild/src/chatmaild/tests/conftest.py

@@ -0,0 +1,3 @@
+"""Opt in to the chatmaild fixtures, which are not registered globally."""
+
+from chatmaild.tests.plugin import *  # noqa: F403