Remove unused audit-ci dependency

There is a `yarn ci` script which was using audit-ci but this does not
appear to be called anywhere.

The security worflow uses `yarn audit` and `npm audit` which seem fine
enough anyway.

package.json

@@ -27,12 +27,10 @@
     "postinstall": "./ci/dev/postinstall.sh",
     "publish:npm": "./ci/steps/publish-npm.sh",
     "publish:docker": "./ci/steps/docker-buildx-push.sh",
-    "_audit": "./ci/dev/audit.sh",
     "fmt": "yarn prettier && ./ci/dev/doctoc.sh",
     "lint:scripts": "./ci/dev/lint-scripts.sh",
     "lint:ts": "eslint --max-warnings=0 --fix $(git ls-files '*.ts' '*.js' | grep -v 'lib/vscode')",
     "test": "echo 'Run yarn test:unit or yarn test:e2e' && exit 1",
-    "ci": "./ci/dev/ci.sh",
     "watch": "VSCODE_DEV=1 VSCODE_IPC_HOOK_CLI= NODE_OPTIONS='--max_old_space_size=32384 --trace-warnings' ts-node ./ci/dev/watch.ts",
     "icons": "./ci/dev/gen_icons.sh"
   },
@@ -53,7 +51,6 @@
     "@types/ws": "^8.5.5",
     "@typescript-eslint/eslint-plugin": "^7.0.0",
     "@typescript-eslint/parser": "^6.7.2",
-    "audit-ci": "^6.6.1",
     "doctoc": "^2.2.1",
     "eslint": "^8.49.0",
     "eslint-config-prettier": "^9.0.0",