bpf: Update the list of BPF selftests maintainers

Unfortunately Mykola won't participate in BPF selftests maintenance
anymore. Remove the entry on his behalf.

Acked-by: Mykola Lysenko <nickolay.lysenko@gmail.com>
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20250909171638.2417272-1-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

Author: eddyz87

MAINTAINERS

@@ -4682,7 +4682,6 @@ F:	security/bpf/
 BPF [SELFTESTS] (Test Runners & Infrastructure)
 M:	Andrii Nakryiko <andrii@kernel.org>
 M:	Eduard Zingerman <eddyz87@gmail.com>
-R:	Mykola Lysenko <mykolal@fb.com>
 L:	bpf@vger.kernel.org
 S:	Maintained
 F:	tools/testing/selftests/bpf/