amarisoft_enb: Drop unused lib variable

Change-Id: Iea3e77a4b9f25f2781f617cd4bfd0ba4b34c709e
diff --git a/src/osmo_gsm_tester/amarisoft_enb.py b/src/osmo_gsm_tester/amarisoft_enb.py
index 99b0ace..0890f90 100644
--- a/src/osmo_gsm_tester/amarisoft_enb.py
+++ b/src/osmo_gsm_tester/amarisoft_enb.py
@@ -136,7 +136,6 @@
 
     def configure(self):
         self.inst = util.Dir(os.path.abspath(self.bin_prefix()))
-        lib = self.inst.child('lib')
         if not self.inst.isfile('', AmarisoftENB.BINFILE):
             raise log.Error('No %s binary in' % AmarisoftENB.BINFILE, self.inst)