Remove ghost feature: api.HTMLAreaElement.hreflang (#7539)
Remove ghost feature: api.HTMLAreaElement.hreflang (#7539)

This commit removes the ghost feature: api.HTMLAreaElement.hreflang.
This feature is not supported in any browsers (despite what the
current data indicates).
mdn/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data