Delete unused load test suite (#10651)

These have not run in ages (couldn't find how long, likely over a year). The test coverage they provide is duplicated in other tests and they are not even executed as load tests. Even if they were, they would not sufficiently cover our performance hot spots and are not run in a scientific way.

Author: joelverhagen

NuGetGallery.FunctionalTests.sln

@@ -12,8 +12,6 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NuGetGallery.FunctionalTest
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NuGetGallery.FunctionalTests.Core", "tests\NuGetGallery.FunctionalTests.Core\NuGetGallery.FunctionalTests.Core.csproj", "{8496C7FE-8A93-4D2E-A9DC-5DE44017187C}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NuGetGallery.LoadTests", "tests\NuGetGallery.LoadTests\NuGetGallery.LoadTests.csproj", "{0A6B1A52-4D26-4946-9DDD-416D01A1ADBF}"
-EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NuGetGallery.WebUITests.P0", "tests\NuGetGallery.WebUITests.P0\NuGetGallery.WebUITests.P0.csproj", "{B3D313C5-A076-424C-B812-4EDE2D9EE888}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NuGetGallery.WebUITests.P1", "tests\NuGetGallery.WebUITests.P1\NuGetGallery.WebUITests.P1.csproj", "{66ACA75F-EE4D-4D23-AEC5-E38C715CDC7E}"
@@ -36,10 +34,6 @@ Global
 		{8496C7FE-8A93-4D2E-A9DC-5DE44017187C}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{8496C7FE-8A93-4D2E-A9DC-5DE44017187C}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{8496C7FE-8A93-4D2E-A9DC-5DE44017187C}.Release|Any CPU.Build.0 = Release|Any CPU
-		{0A6B1A52-4D26-4946-9DDD-416D01A1ADBF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{0A6B1A52-4D26-4946-9DDD-416D01A1ADBF}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{0A6B1A52-4D26-4946-9DDD-416D01A1ADBF}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{0A6B1A52-4D26-4946-9DDD-416D01A1ADBF}.Release|Any CPU.Build.0 = Release|Any CPU
 		{B3D313C5-A076-424C-B812-4EDE2D9EE888}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{B3D313C5-A076-424C-B812-4EDE2D9EE888}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{B3D313C5-A076-424C-B812-4EDE2D9EE888}.Release|Any CPU.ActiveCfg = Release|Any CPU

tests/NuGetGallery.FunctionalTests.Core/GalleryConfiguration.cs

@@ -19,7 +19,6 @@ public class GalleryConfiguration
         public string Slot { get; set; }
         public string ProductionBaseUrl { get; set; }
         public string StagingBaseUrl { get; set; }
-        public string SearchServiceBaseUrl { get; set; }
         public string EmailServerHost { get; set; }
         public bool DefaultSecurityPoliciesEnforced { get; set; }
         public bool TestPackageLock { get; set; }

tests/NuGetGallery.FunctionalTests.Core/Helpers/UrlHelper.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
@@ -48,14 +48,6 @@ public static string BaseUrl
             }
         }
 
-        public static string SearchServiceBaseUrl
-        {
-            get
-            {
-                return EnsureTrailingSlash(GalleryConfiguration.Instance.SearchServiceBaseUrl);
-            }
-        }
-
         public static string V1FeedRootUrl
         {
             get