Revert "sched/fair: Rename h_nr_running into h_nr_queued"

This reverts commit 0cc4721a which is
commit 7b8a702d upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: Iadcab6682d9c0ec46c1fecf988d75104045eefb8
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>