staging: unisys: visorbus: Remove unused enum members

Visorchipset used to parse CONTROLVM messages with a variety of string
information. All but the name string have been removed, but the code
to handle this information remained. This patch removes the other values
and handlers.

Signed-off-by: Bryan Thompson <bryan.thompson@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>