Remove knip dependency

Removes knip and its transitive dependencies as it's no longer needed
for the project's development workflow.

Author: jdalton

package.json

@@ -771,7 +771,6 @@
     "get-east-asian-width": "1.3.0",
     "globals": "16.4.0",
     "husky": "9.1.7",
-    "knip": "5.42.3",
     "libnpmpack": "9.0.9",
     "lint-staged": "15.2.11",
     "magic-string": "0.30.17",