curl --location --request DELETE '/open_api/work_item/relation/delete' \
--header 'X-PLUGIN-TOKEN: {{plugin_token}}' \
--header 'X-USER-KEY: {{user_key}}' \
--header 'Content-Type: application/json' \
--data-raw '{
"project_key": "658b9f05809f644bebxxxxx",
"relation_id": "658b9f05809f644bebd6613a:work_item_relation:relation_75000188xxxxx",
}'
{
"data": "",
"err": {},
"err_msg": "",
"err_code": 0
}