[ES|QL] remove `META FUNCTIONS`

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[ES|QL] remove `META FUNCTIONS` #113412

Open drewdaemon opened 2 hours ago

drewdaemon commented 2 hours ago

Description

One of the ideas behind META FUNCTIONS was to provide Kibana with the metadata it needed to validate functions client-side. Kibana is using the function definitions generated from unit tests instead.

Is there any other reason to keep META FUNCTIONS around?

The META command is not documented so its removal is possibly a non-breaking change.

elasticsearchmachine commented 2 hours ago

Pinging @elastic/es-analytical-engine (Team:Analytics)

elasticsearchmachine commented 2 hours ago

Pinging @elastic/kibana-esql (ES|QL-ui)