Intent to remove: Error Console

[Brian Grinstead]

There is an Error Console feature in toolkit that's been replaced by the Browser Console.  We'd like to remove associated code in toolkit/components/console/ and the component in bugzilla (Toolkit: Error Console).  This will also remove the —jsconsole command line flag for consumers that don’t use devtools.

The code isn't used at all in Firefox, as discussed in https://groups.google.com/forum/#!topic/mozilla.dev.developer-tools/XYPqQ58ndX4/discussion.  It’s also now possible to migrate usages to the Browser Console i.e. Seamonkey is no longer using it as of bug 1223341.

Brian