Remove a JSONB array element by object key in Posgres

pg_remove_jsonb_array_element.sql

UPDATE
  <table> t
SET
  <field> =(
    SELECT
      t2.<field> #- ARRAY[(
        POSITION-1
      )::TEXT] new_value
    FROM
      <table> t2 ,
      jsonb_array_elements(t2.masks) WITH ORDINALITY arr(
        elem,
        POSITION
      )
    WHERE
      t2.id = t.id
      AND elem->>'<object_key>' = :value
  )
WHERE
  t.<field> @> CONCAT('[{"<object_key>":"', :value, '"}]')::JSONB
  AND t.id IN (:ids);