fix: remove out of date test and flakey mocking lib

Author: janl

package.json

@@ -86,7 +86,6 @@
     "median": "0.0.2",
     "mkdirp": "0.5.1",
     "mocha": "10.2.0",
-    "mockery": "2.1.0",
     "ncp": "2.0.0",
     "playwright": "1.42.1",
     "pouchdb-express-router": "0.0.11",