remove stale cgroups-v2.patch

Signed-off-by: Peter Hunt <pehunt@redhat.com>

cgroups-v2.patch

@@ -1,103 +0,0 @@
-From 5fb0f19ec8c52ed0c9bbb3551deb0016992ecc52 Mon Sep 17 00:00:00 2001
-From: Giuseppe Scrivano <gscrivan@redhat.com>
-Date: Thu, 3 Oct 2019 15:58:39 +0200
-Subject: [PATCH] cgroups: raise an error on cgroups v2
-
-Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
----
- create.go      |  8 ++++++++
- run.go         |  8 ++++++++
- utils_linux.go | 14 ++++++++++++++
- 3 files changed, 30 insertions(+)
-
-diff --git a/create.go b/create.go
-index 5f3ac609..91d17d07 100644
---- a/create.go
-+++ b/create.go
-@@ -1,6 +1,7 @@
- package main
- 
- import (
-+	"fmt"
- 	"os"
- 
- 	"github.com/urfave/cli"
-@@ -52,6 +53,13 @@ command(s) that get executed on start, edit the args parameter of the spec. See
- 		},
- 	},
- 	Action: func(context *cli.Context) error {
-+		unified, err := IsCgroup2UnifiedMode()
-+		if  err != nil {
-+			return err
-+		}
-+		if unified {
-+			return fmt.Errorf("this version of runc doesn't work on cgroups v2")
-+		}
- 		if err := checkArgs(context, 1, exactArgs); err != nil {
- 			return err
- 		}
-diff --git a/run.go b/run.go
-index f8d63178..3f29737b 100644
---- a/run.go
-+++ b/run.go
-@@ -3,6 +3,7 @@
- package main
- 
- import (
-+	"fmt"
- 	"os"
- 
- 	"github.com/urfave/cli"
-@@ -63,6 +64,13 @@ command(s) that get executed on start, edit the args parameter of the spec. See
- 		},
- 	},
- 	Action: func(context *cli.Context) error {
-+		unified, err := IsCgroup2UnifiedMode()
-+		if  err != nil {
-+			return err
-+		}
-+		if unified {
-+			return fmt.Errorf("this version of runc doesn't work on cgroups v2")
-+		}
- 		if err := checkArgs(context, 1, exactArgs); err != nil {
- 			return err
- 		}
-diff --git a/utils_linux.go b/utils_linux.go
-index 984e6b0f..a5a03de9 100644
---- a/utils_linux.go
-+++ b/utils_linux.go
-@@ -9,6 +9,7 @@ import (
- 	"os/exec"
- 	"path/filepath"
- 	"strconv"
-+	"syscall"
- 
- 	"github.com/opencontainers/runc/libcontainer"
- 	"github.com/opencontainers/runc/libcontainer/cgroups/systemd"
-@@ -26,6 +27,10 @@ import (
- 	"golang.org/x/sys/unix"
- )
- 
-+const (
-+	_cgroup2SuperMagic = 0x63677270
-+)
-+
- var errEmptyID = errors.New("container id cannot be empty")
- 
- // loadFactory returns the configured factory instance for execing containers.
-@@ -451,3 +456,12 @@ func startContainer(context *cli.Context, spec *specs.Spec, action CtAct, criuOp
- 	}
- 	return r.run(spec.Process)
- }
-+
-+// IsCgroup2UnifiedMode returns whether we are running in cgroup 2 cgroup2 mode.
-+func IsCgroup2UnifiedMode() (bool, error) {
-+	var st syscall.Statfs_t
-+	if err := syscall.Statfs("/sys/fs/cgroup", &st); err != nil {
-+		return false, err
-+	}
-+	return st.Type == _cgroup2SuperMagic, nil
-+}
--- 
-2.21.0
-