# What this PR does
Related to [this
discussion](https://raintank-corp.slack.com/archives/C04JCU51NF8/p1706550226831949)
Removes the `/oncall` Slack slash command + the concept of
`force_route_id` (as this Slack slash command was the last piece of code
to use this concept
[here](https://github.com/grafana/oncall/blob/dev/engine/apps/slack/scenarios/manual_incident.py#L146))
## TODO before merging
- [x] update the various env's Slack apps to remove the slash command
from the app manifests
## Checklist
- [x] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] `CHANGELOG.md` updated (or `pr:no changelog` PR label added if not
required)
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