remove references to removed setup.py (#674)

Author: pacrob

Makefile

@@ -90,7 +90,7 @@ validate-newsfragments:
 check-docs: build-docs validate-newsfragments
 
 build-docs:
-	sphinx-apidoc -o docs/ . setup.py "*conftest*" tests/
+	sphinx-apidoc -o docs/ . "*conftest*" tests/
 	$(MAKE) -C docs clean
 	$(MAKE) -C docs html
 	$(MAKE) -C docs doctest

pyproject.toml

@@ -221,12 +221,7 @@ values = ["alpha", "beta", "stable"]
 [tool.bumpversion.part.devnum]
 
 [[tool.bumpversion.files]]
-filename = "setup.py"
-search = "version=\"{current_version}\""
-replace = "version=\"{new_version}\""
-
-[[tool.bumpversion.files]]
-filename = "pyproject.toml"              # Keep pyproject.toml version in sync
+filename = "pyproject.toml"
 search = 'version = "{current_version}"'
 replace = 'version = "{new_version}"'