gn2bp: Removed meaningless lines

Test: ./update_result.sh
Change-Id: I12a07ba3593929a1d7666a3230b62bb8a5aeff53
diff --git a/tools/gn2bp/gn_utils.py b/tools/gn2bp/gn_utils.py
index 7e6752b..686003c 100644
--- a/tools/gn2bp/gn_utils.py
+++ b/tools/gn2bp/gn_utils.py
@@ -238,9 +238,6 @@
       outs = [re.sub('^//out/.+?/gen/', '', x) for x in desc['outputs']]
       target.outputs.update(outs)
       target.script = desc['script']
-      # Args are typically relative to the root build dir (../../xxx)
-      # because root build dir is typically out/xxx/).
-      target.args = [re.sub('^../../', '//', x) for x in desc['args']]
       target.args = desc['args']
       target.response_file_contents = self._get_response_file_contents(desc)
     elif target.type == 'copy':