generate_test_report: drop symlink

All users should invoke this directly from autotest now.

BUG=None
TEST=precq passes

Change-Id: Iadf3af813b7d3f00b47dbfea1e71c7cfd567ffa9
Reviewed-on: https://chromium-review.googlesource.com/1498116
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Amin Hassani <ahassani@chromium.org>
diff --git a/generate_test_report b/generate_test_report
deleted file mode 120000
index b89c4dc..0000000
--- a/generate_test_report
+++ /dev/null
@@ -1 +0,0 @@
-../third_party/autotest/files/site_utils/generate_test_report
\ No newline at end of file