MAINTAINERS: Remove inactive collabs for Bluetooth Audio

The two collaborators, Casper-Bonde-Bose and MariuszSkamra,
are not actively collaborating on Zephyr anymore.
Remove to avoid assigning them as reviewer for PRs which
gives a false sense of who may actually review PRs.

Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>

Author: Thalley

MAINTAINERS.yml

@@ -519,8 +519,6 @@ Bluetooth Audio:
     - Thalley
   collaborators:
     - jhedberg
-    - Casper-Bonde-Bose
-    - MariuszSkamra
     - sjanc
     - asbjornsabo
     - fredrikdanebjer