revert dev tool config files for master branch

requirements_test.txt

@@ -6,4 +6,4 @@ pydocstyle==6.1.1
 cryptography==3.2
 pylint==2.8.2
 pylint-strict-informational==0.1
-homeassistant==2021.1.4
+homeassistant==2021.1.4

tox.ini

@@ -35,4 +35,4 @@ commands =
 
 [testenv:typing]
 commands =
-    mypy --ignore-missing-imports --follow-imports=skip custom_components
+    mypy --ignore-missing-imports --follow-imports=skip custom_components