Revert "Print handler for validation errors."
Revert "Print handler for validation errors."

This reverts commit be126e64f34910ba1e1282031cb0dc759f87c5e7.

Conflicts:

	lib/tilelive.js

paulovieira/tilelive,mapbox/tilelive.js,gravitystorm/tilelive.js,kyroskoh/tilelive,Norkart/tilelive.js,nyurik/tilelive.js,topwood/tilelive,tomhughes/tilelive.js,mapbox/tilelive