Bug 1695795: Remove unused Glean metric types

[mdboom]

Related to mozilla-services/mozilla-pipeline-schemas#662

[mdboom]

I'm not sure I understand the failure:

       if any(
            schema.get_size() > max_size for _, s in schemas.items() for schema in s
        ):
            raise SchemaException(
>               "Schema must be smaller or equal max_size {}".format(max_size)
            )
E           mozilla_schema_generator.schema.SchemaException: Schema must be smaller or equal max_size 10000

mozilla_schema_generator/generic_ping.py:87: SchemaException

How could removing these things make the schema larger?

[jklukas]

How could removing these things make the schema larger?

This is not your fault. It's a symptom of the volume of probes being scraped, so the scraper is currently failing prod as well. See https://bugzilla.mozilla.org/show_bug.cgi?id=1688633 for full context and mitigation plan.

[fbertsch]

LGTM, we'll merge this after https://bugzilla.mozilla.org/show_bug.cgi?id=1688633 is resolved

[fbertsch]

Going to wait to deploy this until we get one schema deploy with #184.

[fbertsch]

@mdboom We should see this deployed with the next schema deploy, EOD today.