[autotest] Remove parser_path for site_parse

This doesnt look to be used anywhere.  Git grep turns up nothing that
looks alive for parser_path or site_parse.

BUG=chromium:672727
TEST=None

Change-Id: Ic04f67629f613dee65b0892de0364d05bd907876
Reviewed-on: https://chromium-review.googlesource.com/438828
Commit-Ready: Allen Li <ayatane@chromium.org>
Tested-by: Allen Li <ayatane@chromium.org>
Reviewed-by: Prathmesh Prabhu <pprabhu@chromium.org>
diff --git a/scheduler/site_monitor_db.py b/scheduler/site_monitor_db.py
index f008116..13ca979 100644
--- a/scheduler/site_monitor_db.py
+++ b/scheduler/site_monitor_db.py
@@ -14,15 +14,6 @@
 from autotest_lib.scheduler import scheduler_config, scheduler_models
 
 
-# Override default parser with our site parser.
-def parser_path(install_dir):
-    """Return site implementation of parser.
-
-    @param install_dir: installation directory.
-    """
-    return os.path.join(install_dir, 'tko', 'site_parse')
-
-
 class SiteAgentTask(object):
     """
     SiteAgentTask subclasses BaseAgentTask in monitor_db.