Switch to side-by-side view

--- a/src/utils/idfile.cpp
+++ b/src/utils/idfile.cpp
@@ -36,14 +36,6 @@
  * There is a very old (circa 1990) mbox format using blocks of ^A (0x01) chars
  * to separate messages, that we don't recognize currently
  */
-
-std::list<string> idFileAllTypes()
-{
-    std::list<string> lst;
-    lst.push_back("text/x-mail");
-    lst.push_back("message/rfc822");
-    return lst;
-}
 
 // Mail headers we compare to:
 static const char *mailhs[] = {"From: ", "Received: ", "Message-Id: ", "To: ",