Fix: [AEA-0000] - Silent running database fix (#1893)

## Summary

- Routine Change

### Details

Kayal has found that when we are using silent running, the database is
not updated correctly. This is an exploratory PR to see what's going on.

Author: wildjames

packages/nhsNotifyLambda/src/utils/dynamo.ts

@@ -85,8 +85,7 @@ export async function checkCooldownForUpdate(
       TableName: dynamoTable,
       Key: {
         NHSNumber: update.PatientNHSNumber,
-        ODSCode: update.PharmacyODSCode,
-        requestID: update.RequestID
+        ODSCode: update.PharmacyODSCode
       }
     })
     const {Item} = await docClient.send(getCmd)