migration: Drop migration_is_device()

After being removed from VFIO, migration_is_device() no longer has any
users. Drop it.

Signed-off-by: Avihai Horon <[email protected]>
Reviewed-by: Cédric Le Goater <[email protected]>
Acked-by: Peter Xu <[email protected]>
Tested-by: Joao Martins <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Cédric Le Goater <[email protected]>

Author: avihai1122

include/migration/misc.h

@@ -54,7 +54,6 @@ void migration_object_init(void);
 void migration_shutdown(void);
 
 bool migration_is_active(void);
-bool migration_is_device(void);
 bool migration_is_running(void);
 bool migration_thread_is_self(void);
 

migration/migration.c

@@ -1645,13 +1645,6 @@ bool migration_is_active(void)
             s->state == MIGRATION_STATUS_POSTCOPY_ACTIVE);
 }
 
-bool migration_is_device(void)
-{
-    MigrationState *s = current_migration;
-
-    return s->state == MIGRATION_STATUS_DEVICE;
-}
-
 bool migration_thread_is_self(void)
 {
     MigrationState *s = current_migration;