Reduce extension dependencies (#1891)

Remove unnecessary extension dependencies

## Checklist

- [/] I have added
[tests](https://www.cursorless.org/docs/contributing/test-case-recorder/)
- [/] I have updated the
[docs](https://github.com/cursorless-dev/cursorless/tree/main/docs) and
[cheatsheet](https://github.com/cursorless-dev/cursorless/tree/main/cursorless-talon/src/cheatsheet)
- [/] I have not broken the cheatsheet

Author: AndreasArvidsson

packages/common/src/extensionDependencies.ts

@@ -1,8 +1,11 @@
 export const extensionDependencies = [
   "pokey.parse-tree",
-  "ms-toolsai.jupyter",
+
+  // Register necessary file extensions for tests
   "scalameta.metals",
-  "ms-python.python",
   "mrob95.vscode-talonscript",
   "jrieken.vscode-tree-sitter-query",
+
+  // Necessary for the `drink cell` and `pour cell` tests
+  "ms-toolsai.jupyter",
 ];

packages/cursorless-vscode/src/scripts/initLaunchSandbox.ts

@@ -6,7 +6,7 @@
 import { extensionDependencies } from "@cursorless/common";
 import * as cp from "child_process";
 
-const extraExtensions = ["pokey.command-server", "pokey.talon"];
+const extraExtensions = ["pokey.command-server"];
 
 async function main() {
   try {