slirp: Drop dead code

After all its years inside the qemu tree, there is no point in keeping
the dead code paths of slirp. This patch is a first round of removing
usually commented out code parts. More cleanups need to follow (and
maybe finally a proper reindention).

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/slirp/tftp.c b/slirp/tftp.c
index 7cb095f..3358e2b 100644
--- a/slirp/tftp.c
+++ b/slirp/tftp.c
@@ -23,7 +23,7 @@
  */
 
 #include <slirp.h>
-#include "qemu-common.h" // for pstrcpy
+#include "qemu-common.h"
 
 struct tftp_session {
     int in_use;