chore: reduce dependencies

Author: tsctx

package.json

@@ -119,7 +119,6 @@
     "jsfuzz": "^1.0.15",
     "mitata": "^0.1.6",
     "mocha": "^10.0.0",
-    "mockttp": "^3.9.2",
     "p-timeout": "^3.2.0",
     "pre-commit": "^1.2.2",
     "proxy": "^1.0.2",