Remove BigQuery driver custom implementation of field->alias [ci bigquery]

.circleci/config.yml

src/metabase/driver/bigquery.clj

src/metabase/mbql/util.clj

...se/query_processor/middleware/cumulative_aggregations.clj

test/metabase/driver/bigquery_test.clj

...ery_processor/middleware/cumulative_aggregations_test.clj

test/metabase/query_processor_test.clj

test/metabase/query_processor_test/order_by_test.clj

test/metabase/test/data/bigquery.clj

test/metabase/test/data/interface.clj