diff --git a/.cron.yml b/.cron.yml
index 84a675fa7d..2d49cfe9c3 100644
--- a/.cron.yml
+++ b/.cron.yml
@@ -81,16 +81,6 @@ jobs:
               comm-beta: [{hour: 9, minute: 00}]
               # No default
 
-    - name: l10n-cross-channel
-      job:
-          type: decision-task
-          treeherder-symbol: l10n-cross-channel
-          target-tasks-method: l10n-cross-channel
-      run-on-projects:
-          - comm-central
-      when: [{hour: 12, minute: 0}]
-      # when: []
-
     - name: tb-rust-vendor-check
       job:
           type: decision-task
diff --git a/taskcluster/comm_taskgraph/transforms/tb_cross_channel.py b/taskcluster/comm_taskgraph/transforms/tb_cross_channel.py
deleted file mode 100644
index ecdfd577af..0000000000
--- a/taskcluster/comm_taskgraph/transforms/tb_cross_channel.py
+++ /dev/null
@@ -1,46 +0,0 @@
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-"""
-Build a command to run `mach tb-l10n-x-channel`.
-"""
-
-from shlex import quote as shell_quote
-
-from taskgraph.transforms.base import TransformSequence
-from taskgraph.util.schema import resolve_keyed_by
-
-from rocbuild.notify import TB_BUILD_ADDR
-
-transforms = TransformSequence()
-
-
-@transforms.add
-def resolve_keys(config, jobs):
-    for job in jobs:
-        for item in ["ssh-key-secret", "run.actions"]:
-            resolve_keyed_by(job, item, item, **{"level": str(config.params["level"])})
-        yield job
-
-
-@transforms.add
-def build_command(config, jobs):
-    for job in jobs:
-        command = [
-            "tb-l10n-x-channel",
-            "-o",
-            "/builds/worker/artifacts/outgoing.diff",
-            "--attempts",
-            "5",
-        ]
-        ssh_key_secret = job.pop("ssh-key-secret")
-        if ssh_key_secret:
-            command.extend(["--ssh-secret", ssh_key_secret])
-            job.setdefault("scopes", []).append(f"secrets:get:{ssh_key_secret}")
-            job["scopes"].append(f"notify:email:{TB_BUILD_ADDR}")
-
-        command.extend(job["run"].pop("actions", []))
-        job.setdefault("run", {}).update(
-            {"using": "mach", "mach": " ".join(map(shell_quote, command))}
-        )
-        yield job
diff --git a/taskcluster/kinds/l10n-cross-channel/kind.yml b/taskcluster/kinds/l10n-cross-channel/kind.yml
deleted file mode 100644
index b52717f70b..0000000000
--- a/taskcluster/kinds/l10n-cross-channel/kind.yml
+++ /dev/null
@@ -1,42 +0,0 @@
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
----
-loader: taskgraph.loader.transform:loader
-
-transforms:
-    - comm_taskgraph.transforms.tb_cross_channel:transforms
-    - gecko_taskgraph.transforms.job:transforms
-    - gecko_taskgraph.transforms.task:transforms
-
-tasks:
-    quarantine:
-        description: Push strings from all shipping trains to comm-strings-quarantine
-        run-on-projects: []
-        worker-type: b-linux-gcp
-        ssh-key-secret:
-            by-level:
-                "3": project/comm/thunderbird/releng/build/level-3/l10n-cross-channel-quarantine-ssh
-                default: null
-        worker:
-            docker-image: {in-tree: push-to-try}
-            max-run-time: 3600
-            artifacts:
-                - type: directory
-                  name: public/build
-                  path: /builds/worker/artifacts
-            env:
-                TASK_ID: {"task-reference": "<self>"}
-                TASKCLUSTER_PROXY_URL: http://taskcluster
-        treeherder:
-            platform: thunderbird-release/opt
-            tier: 1
-            kind: build
-            symbol: Rel(l10n-cross-channel)
-        run:
-            using: mach
-            comm-checkout: true
-            actions:
-                by-level:
-                    "3": ["prep", "create", "push", "clean"]
-                    default: ["prep", "create", "clean"]