First round of dead file removal

experimental/visual_studio_plugin/src/NaClVsx.Package/ProjectSupport/NaClConfigProvider.cs

-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.Linq;
-using System.Text;
-using Microsoft.VisualStudio;
-using Microsoft.VisualStudio.Project;
-
-namespace Google.NaClVsx.ProjectSupport {
-  class NaClConfigProvider : ConfigProvider {
-
-    public static readonly string[] kPlatforms = {
-                                                   "NaCl",
-                                                 };
-
-    public NaClConfigProvider(ProjectNode manager) : base(manager) {}
-
-    public override int GetPlatformNames(uint celt,
-                                         string[] names,
-                                         uint[] actual) {
-       /* From MSDN:
-        * Typically two calls are made to GetPlatformNames.
-        * With the first call, celt is set to zero, rgbstr
-        * to nullNothingnullptra null reference (Nothing in
-        * Visual Basic), and pcActual to a valid address.
-        * GetPlatformNames returns with pcActual pointing to
-        * the number of platform names available. The caller
-        * uses this information to allocate rgbstr to the
-        * appropriate size and call GetPlatformNames a second
-        * time with celt set to the contents of pcActual.
-        */
-      if (celt == 0) {
-        actual[0] = (uint)kPlatforms.Length;
-      } else {
-        Debug.Assert(celt <= kPlatforms.Length);
-        kPlatforms.CopyTo(names,0);
-        actual[0] = (uint)kPlatforms.Length;
-      }
-      return VSConstants.S_OK;
-    }
-
-    protected override ProjectConfig CreateProjectConfiguration(string configName)
-    {
-      return new NaClProjectConfig(this.ProjectMgr, configName);
-    }
-  }
-}