configure.ac: clean old simulatorbin

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
diff --git a/configure.ac b/configure.ac
index 0387b26..860ca0e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -264,7 +264,6 @@
     tctidefaultconfig:  $with_tctidefaultconfig
     unit:               $enable_unit
     debug:              $enable_debug
-    simulatorbin:       $with_simulatorbin
     maxloglevel:        $with_maxloglevel
     doxygen:            $DX_FLAG_doc $enable_doxygen_doc
 ])