Remove .wbc-editpage in css

.wb-langlinks-link is present everywhere now and is sufficient
as a selector for adding the pencil.

.wbc-editpage additionally exists as a separate link (to wikidata!,
since the item is connected, but has no site links except enwiki).
This causes double pencil.

Iac189e7 does empty() on the parent element of the links, so
that the link and extra pencil go away, but might as well not
have double pencil and legacy css at all.

one pencil remains on span .wb-langlinks-link in all cases.

Bug: 65001
Change-Id: Ib96e6aa8c16cf6f6db9dd121bf3a0afcffa9e285
Merge "Remove .wbc-editpage in css"