runtime: go fix code for 1.19

We have starting to use golang 1.19, some features are
not supported later, so run `go fix` to fix them.

Fixes: #5750

Signed-off-by: Bin Liu <bin@hyper.sh>

src/runtime/pkg/govmm/qemu/qemu_arch_base_test.go

@@ -1,5 +1,4 @@
 //go:build !s390x
-// +build !s390x
 
 // Copyright contributors to the Virtual Machine Manager for Go project
 //

src/runtime/pkg/resourcecontrol/cgroups.go

@@ -1,5 +1,4 @@
 //go:build linux
-// +build linux
 
 // Copyright (c) 2021-2022 Apple Inc.
 //