Stop explicitly implementing IVsFindTarget

Explicit implementers can't use the new Find Look-and-Feel without also
using private hooks (per @dpugh).  Since we were only delegating down the
chain, which is what would happen anyway, there's no need for us to do so.

src/InteractiveWindow/VisualStudio/VsInteractiveWindow.cs

@@ -7,7 +7,6 @@
 using System.Runtime.InteropServices;
 using System.Windows;
 using System.Windows.Input;
-using Microsoft.VisualStudio;
 using Microsoft.VisualStudio.ComponentModelHost;
 using Microsoft.VisualStudio.Editor;
 using Microsoft.VisualStudio.OLE.Interop;
@@ -15,7 +14,6 @@
 using Microsoft.VisualStudio.Shell.Interop;
 using Microsoft.VisualStudio.Text.Editor;
 using Microsoft.VisualStudio.TextManager.Interop;
-using Microsoft.VisualStudio.InteractiveWindow;
 using Microsoft.VisualStudio.Utilities;
 
 namespace Microsoft.VisualStudio.InteractiveWindow.Shell
@@ -32,7 +30,7 @@ namespace Microsoft.VisualStudio.InteractiveWindow.Shell
     /// on the interactive window.
     /// </summary>
     [Guid(Guids.InteractiveToolWindowIdString)]
-    internal sealed class VsInteractiveWindow : ToolWindowPane, IVsFindTarget, IOleCommandTarget, IVsInteractiveWindow
+    internal sealed class VsInteractiveWindow : ToolWindowPane, IOleCommandTarget, IVsInteractiveWindow
     {
         // Keep in sync with Microsoft.VisualStudio.Editor.Implementation.EnableFindOptionDefinition.OptionName.
         private const string EnableFindOptionName = "Enable Autonomous Find";
@@ -192,122 +190,5 @@ private IVsToolWindowToolbarHost GetToolbarHost()
         }
 
         #endregion
-
-        #region IVsFindTarget
-
-        public int Find(string pszSearch, uint grfOptions, int fResetStartPoint, IVsFindHelper pHelper, out uint pResult)
-        {
-            if (_findTarget != null)
-            {
-                return _findTarget.Find(pszSearch, grfOptions, fResetStartPoint, pHelper, out pResult);
-            }
-            pResult = 0;
-            return VSConstants.E_NOTIMPL;
-        }
-
-        public int GetCapabilities(bool[] pfImage, uint[] pgrfOptions)
-        {
-            if (_findTarget != null && pgrfOptions != null && pgrfOptions.Length > 0)
-            {
-                return _findTarget.GetCapabilities(pfImage, pgrfOptions);
-            }
-            return VSConstants.E_NOTIMPL;
-        }
-
-        public int GetCurrentSpan(TextSpan[] pts)
-        {
-            if (_findTarget != null)
-            {
-                return _findTarget.GetCurrentSpan(pts);
-            }
-            return VSConstants.E_NOTIMPL;
-        }
-
-        public int GetFindState(out object ppunk)
-        {
-            if (_findTarget != null)
-            {
-                return _findTarget.GetFindState(out ppunk);
-            }
-            ppunk = null;
-            return VSConstants.E_NOTIMPL;
-        }
-
-        public int GetMatchRect(RECT[] prc)
-        {
-            if (_findTarget != null)
-            {
-                return _findTarget.GetMatchRect(prc);
-            }
-            return VSConstants.E_NOTIMPL;
-        }
-
-        public int GetProperty(uint propid, out object pvar)
-        {
-            if (_findTarget != null)
-            {
-                return _findTarget.GetProperty(propid, out pvar);
-            }
-            pvar = null;
-            return VSConstants.E_NOTIMPL;
-        }
-
-        public int GetSearchImage(uint grfOptions, IVsTextSpanSet[] ppSpans, out IVsTextImage ppTextImage)
-        {
-            if (_findTarget != null)
-            {
-                return _findTarget.GetSearchImage(grfOptions, ppSpans, out ppTextImage);
-            }
-            ppTextImage = null;
-            return VSConstants.E_NOTIMPL;
-        }
-
-        public int MarkSpan(TextSpan[] pts)
-        {
-            if (_findTarget != null)
-            {
-                return _findTarget.MarkSpan(pts);
-            }
-            return VSConstants.E_NOTIMPL;
-        }
-
-        public int NavigateTo(TextSpan[] pts)
-        {
-            if (_findTarget != null)
-            {
-                return _findTarget.NavigateTo(pts);
-            }
-            return VSConstants.E_NOTIMPL;
-        }
-
-        public int NotifyFindTarget(uint notification)
-        {
-            if (_findTarget != null)
-            {
-                return _findTarget.NotifyFindTarget(notification);
-            }
-            return VSConstants.E_NOTIMPL;
-        }
-
-        public int Replace(string pszSearch, string pszReplace, uint grfOptions, int fResetStartPoint, IVsFindHelper pHelper, out int pfReplaced)
-        {
-            if (_findTarget != null)
-            {
-                return _findTarget.Replace(pszSearch, pszReplace, grfOptions, fResetStartPoint, pHelper, out pfReplaced);
-            }
-            pfReplaced = 0;
-            return VSConstants.E_NOTIMPL;
-        }
-
-        public int SetFindState(object pUnk)
-        {
-            if (_findTarget != null)
-            {
-                return _findTarget.SetFindState(pUnk);
-            }
-            return VSConstants.E_NOTIMPL;
-        }
-
-        #endregion
     }
 }