First round of dead file removal

experimental/visual_studio_plugin/src/MsAd7.BaseImpl/ProgramNode.cs

-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.Linq;
-using System.Text;
-using Microsoft.VisualStudio;
-using Microsoft.VisualStudio.Debugger.Interop;
-
-namespace Google.MsAd7.BaseImpl
-{
-  class ProgramNode : IDebugProgramNode2
-  {
-    public int GetProgramName(out string pbstrProgramName) {
-      Debug.WriteLine("ProgramNode.GetProgramName");
-
-      pbstrProgramName = progName_;
-      return VSConstants.S_OK;
-    }
-
-    public int GetHostName(enum_GETHOSTNAME_TYPE dwHostNameType, out string pbstrHostName) {
-      Debug.WriteLine("ProgramNode.GetHostName");
-
-      pbstrHostName = hostName_;
-      return VSConstants.S_OK;
-    }
-
-    public int GetHostPid(AD_PROCESS_ID[] pHostProcessId) {
-      Debug.WriteLine("ProgramNode.GetHostPid");
-
-      pHostProcessId[0] = hostPid_;
-      return VSConstants.S_OK;
-    }
-
-    public int GetHostMachineName_V7(out string pbstrHostMachineName) {
-      Debug.WriteLine("ProgramNode.GetHostMachineName_V7");
-
-      pbstrHostMachineName = hostMachineName_;
-      return VSConstants.S_OK;
-    }
-
-    public int Attach_V7(IDebugProgram2 pMDMProgram, IDebugEventCallback2 pCallback, uint dwReason) {
-      Debug.WriteLine("ProgramNode.Attach_V7");
-
-      throw new NotImplementedException("ProgramNode.Attach_V7");
-    }
-
-    public int GetEngineInfo(out string pbstrEngine, out Guid pguidEngine) {
-      Debug.WriteLine("ProgramNode.GetEngineInfo");
-
-      throw new NotImplementedException("ProgramNode.Attach_V7");
-    }
-
-    public int DetachDebugger_V7() {
-      Debug.WriteLine("ProgramNode.DetachDebugger_V7");
-
-      throw new NotImplementedException("ProgramNode.DetachDebugger_V7");
-    }
-
-    private string progName_ = "ProgramNode.ProgramName";
-    private string hostName_ = "ProgramNode.HostName";
-    private AD_PROCESS_ID hostPid_ = new AD_PROCESS_ID();
-    private string hostMachineName_ = "ProgramNode.HostMachineName";
-  }
-}