Update README as Credentials are no longer required for acceptance tests

services/docstore/README.md

@@ -3,10 +3,6 @@ overleaf/docstore
 
 A CRUD API for storing and updating text documents in projects
 
-## Tests
-```
-AWS_BUCKET=**** AWS_ACCESS_KEY_ID=**** AWS_SECRET_ACCESS_KEY=**** make test
-```
 License
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