Remove requirement for Prometheus URL requirement

With the removal of metrics, the URL is no longer required for the Prometheus integration for alerts. Settings > Monitor > Alerts > Add new integration > Select integration type > Prometheus

added to epic &7783

mentioned in merge request !97715 (closed)

changed the description

changed milestone to %16.0

marked this issue as related to gitlab-org/monitor/respond#109 (closed)

@syasonik - please see the following guidance and update this issue.

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	Please add typebug typefeature, typemaintenance and a subtype label to this issue.

If you do not feel the purpose of this issue matches one of the types, you may apply the typeignore label to exclude it from type tracking metrics and future prompts.

added Category:Incident Management backend devopsmonitor documentation featureconsolidation frontend grouprespond sectionops typefeature labels

added workflowready for development label

mentioned in issue gitlab-org/monitor/respond#238 (closed)

@syasonik I assume we should finish this in 16.1. Let me know if it's not the case.

changed milestone to %16.1

mentioned in issue gitlab-org/monitor/respond#241 (closed)

added priority1 label

mentioned in issue gitlab-org/monitor/respond#243 (closed)

mentioned in issue gitlab-org/monitor/respond#244 (closed)

mentioned in issue gitlab-org/monitor/respond#246 (closed)

mentioned in issue gitlab-org/monitor/respond#247 (closed)

changed milestone to %16.2

added missed:16.1 label