Use importlib-meatdata<5.0.0 for all versions

tests/requirements.txt

@@ -5,6 +5,7 @@ pytest-cov
 pytest-salt-factories==0.912.2
 CherryPy
 setuptools_scm
+importlib-metadata<5.0.0
 pyzmq<=20.0.0 ; python_version < "3.6"
 pyzmq>=17.0.0 ; python_version < "3.9"
 pyzmq>19.0.2 ; python_version >= "3.9"

tox.ini

@@ -10,7 +10,6 @@ deps = -r{toxinidir}/tests/requirements.txt
     v3004.2: jinja2<3.1
     v3005.1: salt==3005.1
     v3006.0: salt==3006.0
-    py3.7-{cherrypy,tornado}-{v3004.2,v3005.1,v3006.0}: importlib-metadata<5.0.0
     master: git+https://github.com/saltstack/salt.git@master#egg=salt
 
 changedir = {toxinidir}