Work around c4urself/bump2version#260

Author: jmknoble

.bumpversion.cfg

@@ -6,9 +6,5 @@ tag = False
 [bumpversion:file:VERSION]
 
 [bumpversion:file:python_venv/__init__.py]
-search = __version__ = "{current_version}"
-replace = __version__ = "{new_version}"
 
 [bumpversion:file:cookiecutter-config.yaml]
-search = version: {current_version}
-replace = version: {new_version}