Revert "Set temporary single CPU affinity..."

There's too much logic here figuring out which CPUs to use. Runc is a
low level tool and is not supposed to be that "smart". What's worse,
this logic is executed on every exec, making it slower. Some of the
logic in (*setnsProcess).start is executed even if no annotation is set,
thus making ALL execs slow.

Also, this should be a property of a process, rather than annotation.

The plan is to rework this.

This reverts commit afc23e3397.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

features.go

@@ -68,7 +68,6 @@ var featuresCommand = cli.Command{
 				"bundle",
 				"org.systemd.property.", // prefix form
 				"org.criu.config",
-				"org.opencontainers.runc.exec.isolated-cpu-affinity-transition",
 			},
 		}