[Sharing-NG] unmount item from share will result in 200 status code

[S-Panta]

Describe the bug

unmounting shares results in 200 response status code.

Steps to reproduce

1.create new file test.
2.share test for user einstein.
3 send API request to disable sync the share

curl -X DELETE 'https://host.docker.internal:9200/graph/v1beta1/drives/{drive-id}/items/{item-id}' -u einstein:relativity

Actual behavior

The staus code is 200.

Expected behavior

Swagger specifies that this endpoint will give 204 status code. What should expected response be?