[Datatable] Remove the angular implementation

[stratoula]

We want to remove the old implementation of the legacy data table. The main reason for doing is the angular dependency. In 7.16 all kibana code that depends in Angular 1 should be either de-angularized or removed. We decided to remove the old datatable for the following reasons:

• It is not the default solution from 7.11 (users can switch to it by changing their kibana.yml file vis_type_table.legacyVisEnabled: true)
• The main blocker for keeping it is going to be fixed on EUI side. [EuiDataGrid] Auto-fit rows to content eui#4958
• Our metrics show a very small amount of clusters that still operate with the legacy implementation (< 1%)

By removing this also this will be fixed #90582

Things that we need to do in order this issue to close:

• Create a PR on the cloud repo to remove the whitelisted kibana.yml setting. Actually, revert the changes applied by this PR https://github.com/elastic/cloud/pull/72050
• Removing the kibana.yml setting means that Kibana wouldn't start up after the upgrade (for the users that have configured it). I think that we should discuss with @KOTungseth how we need to address this removal in our docs
• Clean up all the bugs that are open and have to do with the legacy datatable (and are solved by the new implementation)
• Add an extra option to the new datable to let the users render their entire content (auto-height feature). [EuiDataGrid] Auto-fit rows to content eui#4958 should be merged first

[elasticmachine]

Pinging @elastic/kibana-app (Team:KibanaApp)

[flash1293]

@stratoula seems like this is done, right?

[stratoula]

I haven't closed it yet because we haven't met this criteria

Add an extra option to the new datable to let the users render their entire content (auto-height feature). [EuiDataGrid] Auto-fit rows to content eui#4958 should be merged first