No longer needed for Wikimedia wikis after the HTML caches expired.
This reverts commit e951a09913.
Change-Id: I5eda153e3368f6a7f9d2f88e336e02b65d01f2b5
Follow-up to 5d0a07bf9d.
See T48947#3641618 for a detailed explanation of the
problem this is fixing. Essentially, our CSS has to be
compatible with both new and old HTML to avoid problems
with cached pages on Wikimedia wikis. To do this, we
add a CSS class to the body and make the new CSS only
apply on pages that have this class. This patch should
be reverted when the caches expire.
Bug: T48947
Change-Id: Icf26e6690b59f470765b2634534d18d2df25ee2a
