MAINTAINERS: remove Jerin Jacob from Marvell OcteonTX2

We have not seen tags from Jerin for OcteonTX2 in over 5 years.
Recent lore activity is in DPDK (non-kernel), not Linux.
Sunil, Linu, Geetha, hariprasad, and Subbaraya are active,
though the review coverage isn't great (38%).

Subsystem MARVELL OCTEONTX2 RVU ADMIN FUNCTION DRIVER
  Changes 53 / 138 (38%)
  Last activity: 2026-02-18
  Sunil Goutham <sgoutham@marvell.com>:
    Author fc1b2901 2024-03-08 00:00:00 1
    Tags 70f8986e 2025-06-16 00:00:00 9
  Linu Cherian <lcherian@marvell.com>:
    Author a861e580 2025-10-30 00:00:00 7
    Tags a861e580 2025-10-30 00:00:00 7
  Geetha sowjanya <gakula@marvell.com>:
    Author 70e9a576 2026-01-29 00:00:00 16
    Tags 70e9a576 2026-01-29 00:00:00 20
  Jerin Jacob <jerinj@marvell.com>:
  hariprasad <hkelam@marvell.com>:
    Author 45be47bf 2026-02-18 00:00:00 22
    Tags 45be47bf 2026-02-18 00:00:00 25
  Subbaraya Sundeep <sbhatta@marvell.com>:
    Author 47a12087 2025-10-30 00:00:00 20
    Tags 47a12087 2025-10-30 00:00:00 30
  Top reviewers:
    [36]: horms@kernel.org
    [4]: jacob.e.keller@intel.com
    [4]: kalesh-anakkur.purayil@broadcom.com
    [3]: vadim.fedorenko@linux.dev
    [2]: shaojijie@huawei.com
    [2]: jiri@nvidia.com
  INACTIVE MAINTAINER Jerin Jacob <jerinj@marvell.com>

Link: https://patch.msgid.link/20260303215339.2333548-4-kuba@kernel.org


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