unused usings

Author: MWClayson-NHS

application/CohortManager/src/Functions/DemographicServices/ManageNemsSubscription/ManageNemsSubscriptionConfig.cs

@@ -1,7 +1,6 @@
 namespace NHS.CohortManager.DemographicServices;
 
 using System.ComponentModel.DataAnnotations;
-using Hl7.Fhir.Specification.Navigation;
 
 /// <summary>
 /// Configuration settings for NEMS subscription management

application/CohortManager/src/Functions/ParticipantManagementServices/UpdateBlockedFlag/BlockParticipantHandler.cs

@@ -5,7 +5,6 @@ namespace NHS.CohortManager.ParticipantManagementService;
 using System.Text.Json;
 using Common;
 using DataServices.Client;
-using Microsoft.EntityFrameworkCore.Storage.ValueConversion.Internal;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
 using Model;