diff --git a/qemu/scripts/decodetree.py b/qemu/scripts/decodetree.py
index c77362e9..37c76b55 100644
--- a/qemu/scripts/decodetree.py
+++ b/qemu/scripts/decodetree.py
@@ -149,12 +149,10 @@
 #   trans_addl_i(ctx, &arg_opi, insn)
 #
 
-import io
 import os
 import re
 import sys
 import getopt
-import pdb
 
 insnwidth = 32
 insnmask = 0xffffffff