remove lxcconfig support from bazel rules

rules.bzl

@@ -22,7 +22,6 @@ def _rootfs_impl(ctx):
         inputs = ctx.files.src,
         executable = ctx.executable._undocker,
         arguments = [
-            "rootfs",
             ctx.files.src[0].path,
             out.path,
         ],
@@ -43,70 +42,3 @@ rootfs = rule(
     },
 )
 
-def _lxcconfig_impl(ctx):
-    out = ctx.actions.declare_file(ctx.attr.name)
-    ctx.actions.run(
-        outputs = [out],
-        inputs = ctx.files.src,
-        executable = ctx.executable._undocker,
-        arguments = [
-            "lxcconfig",
-            ctx.files.src[0].path,
-            out.path,
-        ],
-        mnemonic = "LXCConfig",
-    )
-    return DefaultInfo(
-        files = depset([out]),
-        runfiles = ctx.runfiles(files = ctx.files.src),
-    )
-
-def lxcbundle(name, src, version, overlay_tars = []):
-    if type(version) != "int":
-        fail("version must be an int, got {}".format(type(version)))
-    nameversion = "{}.{}".format(name, version)
-    stage0 = nameversion + "/_stage0/rootfs"
-    stage1 = nameversion + "/_stage1/rootfs"
-    rootfs(
-        name = stage0,
-        src = src,
-        out = stage0 + ".tar",
-    )
-    pkg_tar(
-        name = stage1,
-        deps = [stage0] + overlay_tars,
-        extension = "tar.xz",
-        out = stage1 + ".tar.xz",
-    )
-    lxcconfig(name, version, src = src, out = name + "/_stage1/meta.tar.xz")
-
-    pkg_tar(
-        name = nameversion,
-        srcs = [
-            nameversion + "/_stage1/rootfs",
-            nameversion + "/_stage1/meta",
-        ],
-        out = "{}.tar".format(nameversion),
-    )
-
-_lxcconfig = rule(
-    _lxcconfig_impl,
-    doc = "Generate lxc config from a docker container image",
-    attrs = {
-        "src": _input_container,
-        "_undocker": _undocker_cli,
-    },
-)
-
-def lxcconfig(name, version, src, out = None):
-    nameversion = "{}.{}".format(name, version)
-    _lxcconfig(name = nameversion + "/_stage0/config", src = src)
-    pkg_tar(
-        name = nameversion + "/_stage1/meta",
-        extension = "tar.xz",
-        srcs = [nameversion + "/_stage0/config"],
-        remap_paths = {
-            name: "",
-        },
-        out = out or "meta.tar.xz",
-    )