Remove redundant EntityExtensions

Author: davidfowl

docs/2. Build out BackEnd and Refactor.md

@@ -391,81 +391,6 @@ Okay, now we need to update our `ApplicationDbContext` so Entity Framework knows
 1. Copy the following controllers from [the save point folder](/save-points/2-BackEnd-completed/ConferencePlanner/BackEnd/Controllers) into the current project's `BackEnd/Controllers` directory:
    - `SessionsController`
    - `AttendeesController`
-   
-## Update EntityExtensions
-1. Update the `EntityExtensions.cs` file to with the following code (adding the `MapSessionResponse` and `MapAttendeeResponse` methods):
-   ```csharp
-   using BackEnd.Data;
-   using System;
-   using System.Collections.Generic;
-   using System.Linq;
-   using System.Threading.Tasks;
-
-   namespace BackEnd.Data
-   {
-       public static class EntityExtensions
-       {
-           public static ConferenceDTO.SessionResponse MapSessionResponse(this Session session) =>
-               new ConferenceDTO.SessionResponse
-               {
-                   Id = session.Id,
-                   Title = session.Title,
-                   StartTime = session.StartTime,
-                   EndTime = session.EndTime,
-                   Speakers = session.SessionSpeakers?
-                                     .Select(ss => new ConferenceDTO.Speaker
-                                     {
-                                         Id = ss.SpeakerId,
-                                         Name = ss.Speaker.Name
-                                     })
-                                      .ToList(),
-                   TrackId = session.TrackId,
-                   Track = new ConferenceDTO.Track
-                   {
-                       Id = session?.TrackId ?? 0,
-                       Name = session.Track?.Name
-                   },
-                   Abstract = session.Abstract
-               };
-
-           public static ConferenceDTO.SpeakerResponse MapSpeakerResponse(this Speaker speaker) =>
-               new ConferenceDTO.SpeakerResponse
-               {
-                   Id = speaker.Id,
-                   Name = speaker.Name,
-                   Bio = speaker.Bio,
-                   WebSite = speaker.WebSite,
-                   Sessions = speaker.SessionSpeakers?
-                       .Select(ss =>
-                           new ConferenceDTO.Session
-                           {
-                               Id = ss.SessionId,
-                               Title = ss.Session.Title
-                           })
-                       .ToList()
-               };
-
-           public static ConferenceDTO.AttendeeResponse MapAttendeeResponse(this Attendee attendee) =>
-               new ConferenceDTO.AttendeeResponse
-               {
-                   Id = attendee.Id,
-                   FirstName = attendee.FirstName,
-                   LastName = attendee.LastName,
-                   UserName = attendee.UserName,
-                   Sessions = attendee.SessionsAttendees?
-                       .Select(sa =>
-                           new ConferenceDTO.Session
-                           {
-                               Id = sa.SessionId,
-                               Title = sa.Session.Title,
-                               StartTime = sa.Session.StartTime,
-                               EndTime = sa.Session.EndTime
-                           })
-                       .ToList()
-               };
-       }
-   }
-   ```
 
 ## Adding Conference Upload support
 1. Copy the `DataLoader.cs` class from [here](/src/BackEnd/Data/DataLoader.cs) into the `Data` directory of the `BackEnd` project.