mathicsscript is not an entrypoint

mathicsscript comes from a separate package.

Author: rocky

setup.py

@@ -232,7 +232,6 @@ def run(self):
         "console_scripts": [
             "mathics = mathics.main:main",
             "mathicsserver = mathics.server:main",
-            "mathicsscript = mathics.script:main",
         ],
     },
     long_description=long_description,