lrdp-v2: iommu: remove unused variable

out_dir is not used anymore. Remove it.

Change-Id: I082e0642a352e91b232ce02fe40e20a200de9fc8

linux-ramdump-parser-v2/parsers/iommu.py

-# Copyright (c) 2013, The Linux Foundation. All rights reserved.
+# Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 and
@@ -439,8 +439,6 @@ class IOMMU(RamParser):
                 '[!] WARNING: IOMMU domains was not found in this build. No IOMMU page tables will be generated')
             return
 
-        out_dir = self.ramdump.outdir
-
         iommu_domains_rb_root_addr = self.ramdump.read_word(
             iommu_domains_rb_root)
         rb_walker = rb_tree.RbTreeWalker(self.ramdump)