Removing gnome-keyring-manager from desktop distribution

[Stef Walter <stef-list memberwebs com>]

Seahorse now has surpassed the functionality of gnome-keyring-manager,
as far as managing one or more keyrings and the passwords contained in
them. It does things in a more simple manner, and hopefully more
understandable. Screenshots attached. [1]

As was discussed before on this list, I'd suggest we remove
gnome-keyring-manager from the 'desktop' distribution for 2.22. The tool
may have uses elsewhere, but I'm not sure we need to duplicate this
functionality in GNOME.

Cheers,
Stef Walter

[1] Please feel free to file bugs if you see usability or other issues.