Removing the GIS stuff, just for now #implementgis

I'm currently reverting out the GIS stuff because we don't have a
feature request for it and it's going to prevent me from deploying this
as soon as I'd like.  I've tagged it with the #implementgis thing so I
can come back and find it.  This work is still going to be done, it's
just a little delayed.

Revert "Merge branch 'pg_rewrite' of github.com:ipublic/live_transit_api into pg_rewrite"

This reverts commit 32d1e384b2755eac238f5b545f6a22673236602d, reversing
changes made to 6722fd6c18291b7896d128d58533f909e9ca9ada.

This reverts commit 6722fd6c18291b7896d128d58533f909e9ca9ada, reversing
changes made to 2706820e1367dc9b9e79aa677fb9748e5fc314fc.

This reverts commit 2706820e1367dc9b9e79aa677fb9748e5fc314fc, reversing
changes made to 680a550e258ebef5e87e525caa38eac3ccc04cca.