kola/core.go: remove fcos.internet test

This test has been denylisted in FCOS for a long time due to rate
limiting issues with the busybox container. The functionality of the
test is also covered by other FCOS tests so it can be removed.
Also remove some older, obsolete functions that were probably a part
of this test in the past.

see: https://issues.redhat.com/browse/COS-2094

mantle/kola/tests/coretest/core.go

@@ -91,21 +91,6 @@ func init() {
 		// only work on x86_64 and aarch64.
 		Architectures: []string{"x86_64", "aarch64"},
 	})
-	// TODO: Enable DockerPing/DockerEcho once fixed
-	// TODO: Only enable PodmanPing on non qemu. Needs:
-	// https://github.com/coreos/mantle/issues/1132
-	register.RegisterTest(&register.Test{
-		Name:        "fcos.internet",
-		Description: "Verify that podman echo and get head work.",
-		Run:         InternetTests,
-		ClusterSize: 1,
-		Tags:        []string{kola.NeedsInternetTag},
-		NativeFuncs: map[string]register.NativeFuncWrap{
-			"PodmanEcho":     register.CreateNativeFuncWrap(TestPodmanEcho),
-			"PodmanWgetHead": register.CreateNativeFuncWrap(TestPodmanWgetHead),
-		},
-		Distros: []string{"fcos"},
-	})
 	register.RegisterTest(&register.Test{
 		Name:        "rootfs.uuid",
 		Description: "Verify that the root disk's GUID was set to a random one on first boot.",
@@ -179,31 +164,6 @@ func TestPortSsh() error {
 	return nil
 }
 
-func TestDockerEcho() error {
-	//t.Parallel()
-	return util.RunCmdTimeout(DockerTimeout, "docker", "run", "busybox", "echo")
-}
-
-func TestDockerPing() error {
-	//t.Parallel()
-	return util.RunCmdTimeout(DockerTimeout, "docker", "run", "busybox", "ping", "-c4", "coreos.com")
-}
-
-func TestPodmanEcho() error {
-	//t.Parallel()
-	return util.RunCmdTimeout(DockerTimeout, "podman", "run", "busybox", "echo")
-}
-
-func TestPodmanPing() error {
-	//t.Parallel()
-	return util.RunCmdTimeout(DockerTimeout, "podman", "run", "busybox", "ping", "-c4", "coreos.com")
-}
-
-func TestPodmanWgetHead() error {
-	//t.Parallel()
-	return util.RunCmdTimeout(DockerTimeout, "podman", "run", "busybox", "wget", "--spider", "http://fedoraproject.org/static/hotspot.txt")
-}
-
 // This execs gdbus, because we need to change uses to test perms.
 func TestDbusPerms() error {
 	c := exec.Command(