patch 7.4.1433
Problem:    The Sniff interface is no longer useful, the tool has not been
            available for may years.
Solution:   Delete the Sniff interface and related code.
diff --git a/src/gui_w32.c b/src/gui_w32.c
index aff0ba2..6cc2e06 100644
--- a/src/gui_w32.c
+++ b/src/gui_w32.c
@@ -326,7 +326,7 @@
 #endif
 
 static HINSTANCE	s_hinst = NULL;
-#if !defined(FEAT_SNIFF) && !defined(FEAT_GUI)
+#if !defined(FEAT_GUI)
 static
 #endif
 HWND			s_hwnd = NULL;
@@ -1927,23 +1927,6 @@
     }
 #endif
 
-#ifdef FEAT_SNIFF
-    if (sniff_request_waiting && want_sniff_request)
-    {
-	static char_u bytes[3] = {CSI, (char_u)KS_EXTRA, (char_u)KE_SNIFF};
-	add_to_input_buf(bytes, 3); /* K_SNIFF */
-	sniff_request_waiting = 0;
-	want_sniff_request = 0;
-	/* request is handled in normal.c */
-    }
-    if (msg.message == WM_USER)
-    {
-	MyTranslateMessage(&msg);
-	pDispatchMessage(&msg);
-	return;
-    }
-#endif
-
 #ifdef MSWIN_FIND_REPLACE
     /* Don't process messages used by the dialog */
     if (s_findrep_hwnd != NULL && pIsDialogMessage(s_findrep_hwnd, &msg))