Fix bumpver because we removed package.json (#12266)

Author: ericholscher

setup.cfg

@@ -40,8 +40,6 @@ push = False
 setup.cfg =
 	version = {version}
 	current_version = "{version}"
-package.json =
-	"version": "{version}",
 docs/conf.py =
 	version = "{version}"
 readthedocs/__init__.py =