gbsim/uart: remove unnecessary redfinition of operation types
gbsim/uart: remove unnecessary redfinition of operation types

greybus_protocols.h defines the operation types for each protocol and this
set of definitions is available to gbsim. This patch removes the
redefinition for UART.

Signed-off-by: Bryan O'Donoghue <165dc05575478af93ac2f97f67be6e1756010094@linaro.org>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@google.com>

bcousson/gbsim,gregkh/gbsim,bcousson/gbsim,bcousson/gbsim,projectara/gbsim,gregkh/gbsim,projectara/gbsim