Revert "log_services: Add download of post code log entries"

This reverts commit af61db10 which
breaks the ability to detect and post json content as HTTP.  I suspect
something went wrong with the requestPrefersHtml() method that was
modified in this commit.  Authors should feel free to resubmit this
patch once they have the failure understood and fixed.

Change-Id: Id6e8d102fe5d4b02ac0dce06bff50c28edfcf44c
Signed-off-by: Ed Tanous <edtanous@google.com>