Remove HTMLOptionsCollection.remove(element)

Intent to Deprecate and Remove:
https://groups.google.com/a/chromium.org/d/msg/blink-dev/Iyc84XnZl8w/JiOO3znf-L4J

BUG=398627

Review URL: https://codereview.chromium.org/426513002

git-svn-id: svn://svn.chromium.org/blink/trunk@179219 bbb929c8-8fbe-4397-9dbb-9b2b20218538