Remove unused link checkers

Author: sarahxsanders

package-lock.json

@@ -78,9 +78,6 @@
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-mdx": "^3.1.5",
     "eslint-plugin-tailwindcss": "3.17.5",
-    "glob-exec": "^0.1.1",
-    "linkinator": "^6.1.2",
-    "markdown-link-check": "^3.13.7",
     "prettier": "3.4.2",
     "prettier-plugin-pkg": "^0.18.1",
     "prettier-plugin-tailwindcss": "^0.6.9",