Update ShellProgressBar in DNX solution

Remove namespace that causes exception in dotnet5.1
CodeGeneration project does not run from DNX (RazorMachine breaks when it attempts to find the path to referenced assemblies)

Author: russcam

paket.lock

@@ -1,7 +1,10 @@
 NUGET
-  remote: https://www.nuget.org/api/v2
+  remote: http://api.nuget.org/v3/index.json
   specs:
     AsciiDocNet (1.0.0-alpha2)
+    ShellProgressBar (3.0)
+  remote: https://www.nuget.org/api/v2
+  specs:
     Bogus (3.0.5-beta-2)
       Newtonsoft.Json (>= 8.0.2) - framework: >= net40, dnx451, dnxcore50
       System.ComponentModel (>= 4.0.1-beta-23516) - framework: dnxcore50
@@ -348,9 +351,6 @@ NUGET
       System.Threading.Tasks (>= 4.0) - framework: dnxcore50
       xunit.abstractions (>= 2.0) - framework: dnxcore50
       xunit.extensibility.core (2.1) - framework: >= net45, dnx451, dnxcore50, monoandroid, monotouch, xamarinios, winv4.5, wpv8.0, wpav8.1
-  remote: http://api.nuget.org/v3/index.json
-  specs:
-    ShellProgressBar (3.0)
 
 GROUP build
 NUGET

src/CodeGeneration/CodeGeneration.LowLevelClient/project.json

@@ -8,7 +8,7 @@
     "CsQuery": "1.3.5-beta5",
     "Newtonsoft.Json": "8.0.2",
     "RazorMachine": "2.6.1",
-    "ShellProgressBar": "2.0.0.0"
+    "ShellProgressBar": "3.0.0.0"
   },
   "commands": {
     "CodeGeneration.LowLevelClient": "CodeGeneration.LowLevelClient"

src/Nest/Document/Multiple/ReindexOnServer/ReindexRouting.cs

@@ -1,5 +1,4 @@
 using System;
-using System.ServiceModel.Security;
 using Newtonsoft.Json;
 
 namespace Nest