MAINTAINERS: remove adakus

adakus hasn't reviewed any PRs or engaged in any Zephyr
activity since Jan 2023.

Recent activities:

  - review: Review on '[osdp_fixes 3/5] More CP and PD state management
    cleanups'
    zephyrproject-rtos#54197
    (2023-01-30T13:53:10Z)
  - review: Review on 'samples: mgmt/osdp: Select ENTROPY_GENERATOR from
    prj.conf'
    zephyrproject-rtos#53772
    (2023-01-27T10:15:17Z)
  - review: Review on '[osdp_fixes 2/5] Various PD cleanups,
    enhancements and fixes'
    zephyrproject-rtos#53763
    (2023-01-17T12:11:35Z

Signed-off-by: Benjamin Cabé <[email protected]>

Author: kartben

MAINTAINERS.yml

@@ -3913,7 +3913,6 @@ OSDP:
   maintainers:
     - sidcha
   collaborators:
-    - adakus
     - r2r0
   files:
     - subsys/mgmt/osdp/