MLv2: remove `:type :pipeline` (#30063)

src/metabase/lib/metadata.cljc

src/metabase/lib/query.cljc

src/metabase/lib/schema.cljc

src/metabase/lib/util.cljc

src/metabase/query_processor/middleware/normalize_query.clj

test/metabase/lib/aggregation_test.cljc

test/metabase/lib/breakout_test.cljc

test/metabase/lib/card_test.cljc

test/metabase/lib/convert_test.cljc

test/metabase/lib/dev_test.cljc

test/metabase/lib/expression_test.cljc

test/metabase/lib/field_test.cljc

test/metabase/lib/filter_test.cljc

test/metabase/lib/join_test.cljc

test/metabase/lib/normalize_test.cljc

test/metabase/lib/order_by_test.cljc

test/metabase/lib/query_test.cljc

test/metabase/lib/schema/expression/conditional_test.cljc

test/metabase/lib/schema/util_test.cljc

test/metabase/lib/stage_test.cljc