Remove batch sharing

[amrita-shrestha]

Description

At present, OCIS doesn't offer batch sharing functionality, although the Swagger documentation still indicates that OCIS is capable of handling it. OCIS returns a 400 status code in response. Considering this test scenario (https://github.com/owncloud/ocis/blob/master/tests/acceptance/features/apiSharingNg/shareInvitations.feature#L965), it suggests that the inability to perform batch sharing is a genuine feature of OCIS.

Location

• https://github.com/owncloud/libre-graph-api/blob/main/api/openapi-spec/v1.0.yaml#L1262
• https://github.com/owncloud/libre-graph-api/blob/main/api/openapi-spec/v1.0.yaml#L1309
• https://github.com/owncloud/libre-graph-api/blob/main/api/openapi-spec/v1.0.yaml#L548
• https://github.com/owncloud/libre-graph-api/blob/main/api/openapi-spec/v1.0.yaml#L595