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 <[email protected]>:
    Tags 08e50cf 2023-10-04 00:00:00 6
  Ying Xue <[email protected]>:
  Top reviewers:
    [9]: [email protected]
    [8]: [email protected]
    [4]: [email protected]
    [3]: [email protected]
    [2]: [email protected]
  INACTIVE MAINTAINER Ying Xue <[email protected]>

Reviewed-by: Simon Horman <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: kuba-moo

MAINTAINERS

@@ -23641,7 +23641,6 @@ F:	tools/testing/selftests/timers/
 
 TIPC NETWORK LAYER
 M:	Jon Maloy <[email protected]>
-M:	Ying Xue <[email protected]>
 L:	[email protected] (core kernel code)
 L:	[email protected] (user apps, general discussion)
 S:	Maintained