cleaning using refs

Yavsc/Controllers/PeriodController.cs

@@ -1,7 +1,5 @@
-using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Mvc;
-using Microsoft.AspNet.Mvc.Rendering;
 using Microsoft.Data.Entity;
 using Yavsc.Models;
 using Yavsc.Models.Calendar;

Yavsc/Migrations/20170601115553_period.Designer.cs

@@ -1,7 +1,6 @@
 using System;
 using Microsoft.Data.Entity;
 using Microsoft.Data.Entity.Infrastructure;
-using Microsoft.Data.Entity.Metadata;
 using Microsoft.Data.Entity.Migrations;
 using Yavsc.Models;
 

Yavsc/Migrations/20170601115553_period.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Collections.Generic;
 using Microsoft.Data.Entity.Migrations;
 
 namespace Yavsc.Migrations

Yavsc/Migrations/ApplicationDbContextModelSnapshot.cs

@@ -1,8 +1,6 @@
 using System;
 using Microsoft.Data.Entity;
 using Microsoft.Data.Entity.Infrastructure;
-using Microsoft.Data.Entity.Metadata;
-using Microsoft.Data.Entity.Migrations;
 using Yavsc.Models;
 
 namespace Yavsc.Migrations

Yavsc/Models/ApplicationDbContext.cs

@@ -7,7 +7,6 @@ using Microsoft.AspNet.Identity.EntityFramework;
 using Microsoft.Data.Entity;
 using System.Threading;
 using Yavsc.Models.Haircut;
-using Yavsc.Models.Calendar;
 
 namespace Yavsc.Models
 {