[APM] The apmOss plugin description is displayed as undefined in the docs

[gbamparop]

The apm_oss plugin has been removed by #113364

The plugin is still displayed in the documentation and needs to be removed:

[elasticmachine]

Pinging @elastic/apm-ui (Team:apm)

[sorenlouv]

Looks like this is fixed in master: https://www.elastic.co/guide/en/kibana/master/plugin-list.html#plugin-list.
Still, those auto-generated descriptions are something else. The description for the APM plugin in 7.15 is:

To access an elasticsearch instance that has live data you have two options:

In master it has been changed to

undefined

Not sure it's an improvement or regression.

Overall I don't think we need to do much here. apm_oss is removed in master (aka 8.0) which is just around the corner. And this doesn't seem like the most useful resource either way

[gbamparop]

Thanks @sqren, closing the issue as apm_oss is fixed in master.