Ignore EQC stuffs.
Remove Link headers from bucket and key lists.

While webmachine/mochiweb only accepts headers up to 8KB in size, it
has no problem producing huge headers. However, many clients cannot
handle large headers. Since the same information is produced in the
body of these requests anyway, we have no need to produce Link headers
as well. If we want to really use HATEOAS, other things need to be
reconsidered. Since we don't really have HATEOAS, let's not pretend
anymore.
Cleanup comment about Link headers which are no longer produced.
Remove more comments about Link headers. [ci skip]
Merge pull request #491 from basho/sdc-etoomanylinks

Remove Link headers from bucket and key lists