Revert "search-blitz: add ability to change sampling duration for metrics on dashboard"
Created by: bobheadxi
Reverts sourcegraph/sourcegraph#29753
I suspect this is causing CI failures, where prometheus is failing to start: https://buildkite.com/sourcegraph/sourcegraph/builds/125820
2022-01-17T17:25:24.588070560Z [0;33m17:25:24 prometheus | [0mTerminating prometheus
2022-01-17T17:25:24.588082780Z prometheus died. Shutting down...
It is the first build that failed this morning: https://sourcegraph.slack.com/archives/C02FLQDD3TQ/p1642432851057700
Not clear why, but giving this a try
Main-dry-run: https://buildkite.com/sourcegraph/sourcegraph/builds/125854