After scylladb/scylladb#28929 `task_uuid_generator` became necassary
dependency of `view_building_task_mutation_builder`.
However to create the generator we need `view_building_state`, which in
some parts of the code (schema_tables.cc, migration_manager.cc) requires
remote proxy to be obtained.
But sometimes we need the mutation builder to just remove some view
building task. In those cases, we don't need the uuid generator and the
remote proxy requirement is not necassary.
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