techdocs-node: removed unused fs testing utils

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/techdocs-node/package.json

@@ -63,7 +63,6 @@
     "js-yaml": "^4.0.0",
     "json5": "^2.1.3",
     "mime-types": "^2.1.27",
-    "mock-fs": "^5.2.0",
     "p-limit": "^3.1.0",
     "recursive-readdir": "^2.2.2",
     "winston": "^3.2.1"
@@ -74,7 +73,6 @@
     "@types/fs-extra": "^9.0.5",
     "@types/js-yaml": "^4.0.0",
     "@types/mime-types": "^2.1.0",
-    "@types/mock-fs": "^4.13.0",
     "@types/recursive-readdir": "^2.2.0",
     "@types/supertest": "^2.0.8",
     "aws-sdk-client-mock": "^2.0.0",