Remove the unused error set_console_idle_timeout_failed

The error set_console_idle_timeout_failed was added in feature branch
while it is not used anywhere. The error used in
set_console_idle_timeout now is invalid_value.

Signed-off-by: Gang Ji <[email protected]>

Author: gangj

ocaml/idl/datamodel_errors.ml

@@ -2049,9 +2049,6 @@ let _ =
   error Api_errors.host_driver_no_hardware ["driver variant"]
     ~doc:"No hardware present for this host driver variant" () ;
 
-  error Api_errors.set_console_idle_timeout_failed ["timeout"]
-    ~doc:"Failed to set console idle timeout." () ;
-
   error Api_errors.tls_verification_not_enabled_in_pool []
     ~doc:
       "TLS verification has not been enabled in the pool successfully, please \

ocaml/xapi-consts/api_errors.ml

@@ -1430,6 +1430,3 @@ let host_driver_no_hardware = add_error "HOST_DRIVER_NO_HARDWARE"
 
 let tls_verification_not_enabled_in_pool =
   add_error "TLS_VERIFICATION_NOT_ENABLED_IN_POOL"
-
-let set_console_idle_timeout_failed =
-  add_error "SET_CONSOLE_IDLE_TIMEOUT_FAILED"