Remove unneeded usings

Author: TP125487

CloudConvert.API/CloudConvertAPI.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Net.Http;

CloudConvert.API/Models/TaskOperations/WatermarkCreateRequest.cs

@@ -1,7 +1,5 @@
 using Newtonsoft.Json;
-using Newtonsoft.Json.Converters;
 using System.Collections.Generic;
-using CloudConvert.API.Models.Enums;
 
 namespace CloudConvert.API.Models.TaskOperations
 {

CloudConvert.Test/IntegrationTests.cs

@@ -4,13 +4,9 @@
 using System.Threading.Tasks;
 using NUnit.Framework;
 using CloudConvert.API;
-using CloudConvert.API.Models.Enums;
 using CloudConvert.API.Models.ExportOperations;
 using CloudConvert.API.Models.ImportOperations;
-using CloudConvert.API.Models.TaskOperations;
 using CloudConvert.API.Models.JobModels;
-
-using System.Collections.Generic;
 using System;
 
 namespace CloudConvert.Test

CloudConvert.Test/TestTasks.cs

@@ -1,12 +1,9 @@
 using System;
 using System.IO;
-using System.Net;
 using System.Net.Http;
-using System.Threading;
 using System.Threading.Tasks;
 using CloudConvert.API;
 using CloudConvert.API.Models;
-using CloudConvert.API.Models.Enums;
 using CloudConvert.API.Models.ImportOperations;
 using CloudConvert.API.Models.TaskModels;
 using CloudConvert.API.Models.TaskOperations;