Remove etherpad-cli-client devDependency.

We use this package when testing rate limiting. We already install it in
Docker, when running the Github workflow, so there is no need to install it by default.

In contrast to other devDependencies this is not required in case you
want to run the backend tests or check the code with eslint etc.

.github/workflows/rate-limit.yml

@@ -45,6 +45,9 @@ jobs:
       -
         name: install dependencies and create symlink for ep_etherpad-lite
         run: src/bin/installDeps.sh
+      -
+        name: Install etherpad-cli-client
+        run: npm i etherpad-cli-client
       -
         name: run rate limit test
         run: |

src/package.json

@@ -79,7 +79,6 @@
   "devDependencies": {
     "eslint": "^8.43.0",
     "eslint-config-etherpad": "^3.0.15",
-    "etherpad-cli-client": "^2.0.2",
     "mocha": "^10.0.0",
     "mocha-froth": "^0.2.10",
     "nodeify": "^1.0.1",