[moblab] Reduce the length of internetcheck

Current measurment shows that the internet check can take up to
80 seconds

Remove the speed check to improve speed, it will be moved to another
place in the system not critical to bootup

TEST=local build and test

Change-Id: I5a3e9633b4609d87b34c08ac3c8753aae6ae600a
Reviewed-on: https://chromium-review.googlesource.com/1559758
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Keith Haddow <haddowk@chromium.org>
Reviewed-by: Keith Haddow <haddowk@chromium.org>
1 file changed