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Aaha, never thought about it as it was not documented but thanks for pointing it out.

Yes you can. Make a HTTP DELETE to the endpoint

 '/account/~/extension/~/call-log/' + recordId

Here is a sample code using the RingCentral Node JS SDK

 async function read_own_calllog(){
   try {
     var resp = await platform.get('/restapi/v1.0/account/~/extension/~/call-log', {
       dateFrom: '2022-04-01T00:00:00.000Z'
     })
     var jsonObj = await resp.json()
     for (var record of jsonObj.records){
       if (record.id == "XXXXXXXXXX"){ // a record id you want to delete
         deleteRecordById(record.id)
         break
       }
     }
   }catch(e) {
     console.error(e.message);
   };
 }
    
 async function deleteRecordById(recordDd) {
   try {
     var resp = await platform.delete('/restapi/v1.0/account/~/extension/~/call-log/' + id)
     console.log(resp)
   }catch(e) {
     console.error(e.message);
   };
 }