chore: drop the scheduled campaign job

scripts/campaign.py

@@ -53,11 +53,9 @@ Usage:
     python scripts/campaign.py findings [--all] [--json]
     python scripts/campaign.py review KEY --status applied|rejected --reason TEXT [--set FIELD=YAML]
     python scripts/campaign.py gate
-    python scripts/campaign.py install-timer [--enable]
 
-install-timer is opt-in: a contributor who wants a schedule on their own
-machine installs the timer. It writes the units and enables nothing unless
---enable is passed.
+A maintainer starts each pass for a question that names its profiles: no
+job runs it on a schedule.
 """
 
 from __future__ import annotations
@@ -1941,18 +1939,11 @@ def main(argv: Sequence[str] | None = None) -> int:
                           help="with --status applied, a field to write into the entry")
     review_p.add_argument("--index", type=int, help="the entry's position when several share its name")
     sub.add_parser("gate", help="tests, schemas, verify and pack of the changed profiles")
-    timer_p = sub.add_parser("install-timer",
-                             help="opt-in: write the autorun units, the campaign job's timer among them")
-    timer_p.add_argument("--enable", action="store_true",
-                         help="also reload systemd and enable the timers (never by default)")
     args = parser.parse_args(argv)
 
     paths = Paths.default()
     if args.command == "gate":
         return gate(paths.root, changed_profiles(paths.root))
-    if args.command == "install-timer":
-        command = [sys.executable, str(ROOT / "scripts" / "autorun.py"), "install-timers"]
-        return subprocess.run(command + (["--enable"] if args.enable else []), check=False).returncode
     if args.command == "review":
         updates: dict[str, object] = {}
         for item in args.set: