MAINTAINERS: remove Ying Xue from TIPC

There is a steady stream of fixes for TIPC, even tho the development
has slowed down a lot. Over last 2 years we have merged almost 70
TIPC patches, but we haven't heard from Ying Xue once:

Subsystem TIPC NETWORK LAYER
  Changes 42 / 69 (60%)
  Last activity: 2023-10-04
  Jon Maloy <jmaloy@redhat.com>:
    Tags 08e50cf0 2023-10-04 00:00:00 6
  Ying Xue <ying.xue@windriver.com>:
  Top reviewers:
    [9]: horms@kernel.org
    [8]: tung.q.nguyen@dektech.com.au
    [4]: jiri@nvidia.com
    [3]: tung.q.nguyen@endava.com
    [2]: kuniyu@amazon.com
  INACTIVE MAINTAINER Ying Xue <ying.xue@windriver.com>

Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250108155242.2575530-7-kuba@kernel.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>