[API Profile] While API is removing the related ApiDoc instance isn't

[marla-singer]

Verified on local side. On nightly and other instances it is hard to catch error because a developer doesn't have access to MongoDB

Steps

1. Create an API
2. Upload Swagger specification as file
3. Find the related apiDocs in mongoDB and copy value of fileId field in the notebook;
4. Remove the API

Expected result

1. API is successful removed
2. The related ApiDocs is successful removed
3. The related DocumentationFiles is successful removed.

Actual result

1. API is successful removed
2. The related ApiDocs isn't removed. A developer can find one using query db.apiDocs.find({ fileId: "fileId" });
3. The related DocumentationFiles isn't removed. A developer can find one using query db.DocumentationFiles.file.find({ _id: ObjectId("fileId") });