Removes the first count occurrences of value from the list stored at key. If count is positive, elements are removed from the beginning of the list. If count is negative, elements are removed from the end of the list. If count is zero, all elements matching value are removed.
|key holding the list to remove the elements of.
|number of elements to remove.
|value to remove from the list.
|On success, the promise resolves with the number of removed elements.
|If the list does not exist, the promise is rejected with an error.