systemc: Get rid of --working-dir in the test's config.py.

This option is no longer used and isn't needed.

Change-Id: Iec1e2799b4f8c9ea258614323d55941b55828d27
Reviewed-on: https://gem5-review.googlesource.com/c/16565
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Gabe Black <gabeblack@google.com>
diff --git a/src/systemc/tests/config.py b/src/systemc/tests/config.py
index cd7c29e..04d974b 100755
--- a/src/systemc/tests/config.py
+++ b/src/systemc/tests/config.py
@@ -40,13 +40,6 @@
 kernel = SystemC_Kernel()
 root = Root(full_system=True, systemc_kernel=kernel)
 
-parser = argparse.ArgumentParser()
-parser.add_argument('--working-dir')
-
-args = parser.parse_args()
-if args.working_dir:
-    os.chdir(args.working_dir)
-
 m5.systemc.sc_main('gem5_systemc_test');
 
 m5.instantiate(None)