.mailmap: remove one of the entries for WangYuli

Since commit 01ef0296d2eb (".mailmap: add entry for WangYuli") was merged
into mainline, I've received feedback from former colleagues: They believe
the change to .mailmap affects git log based statistics, which in turn
reduces the reported “contributions from uniontech” in the Linux
commit tree, and they think it's difficult to explain to everyone that
future statistics must be generated with the --no-use-mailmap option.

I don't have a strong opinion either way, but since my commit has caused
them trouble, I'm now requesting that this line be removed to bring a
little more LOVE AND PEACE to the world :-)

Link: https://lkml.kernel.org/r/20251208025730.33881-1-wangyuli@aosc.io
Signed-off-by: WangYuli <wangyl5933@chinaunicom.cn>
Cc: Carlos Bilbao <carlos.bilbao@kernel.org>
Cc: Hans Verkuil <hverkuil@kernel.org>
Cc: Martin Kepplinger <martink@posteo.de>
Cc: Shannon Nelson <sln@onemain.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>