python: Remove autoupdate hash extraction

* The Python website has fragmented the SHA256 hashes across multiple
  HTML elements, making them impossible to capture with a single regex.

bucket/python.json

@@ -109,10 +109,6 @@
             "arm64": {
                 "url": "https://www.python.org/ftp/python/$version/python-$version-arm64.exe#/setup.exe"
             }
-        },
-        "hash": {
-            "url": "https://www.python.org/downloads/release/python-$cleanVersion/",
-            "regex": "(?sm)$basename.*?$sha256"
         }
     }
 }