Remove the "Try Gutenberg" callout

[pento]

The callout won't be needed in the 5.0 branch, and it can be removed from the 4.9 branch, as the Gutenberg plugin minimum version will be bumped to require 5.0, after it's released.

[mukesh27]

@pento so we have to remove all occurrence of Gutenberg from core files( php, css, js ).

i have remove all occurrence of Gutenberg from development version (4.9.9-alpha-43656). try attached patch.

[mukesh27]

Remove all occurrence of Gutenberg from core files.

[Luciano Croce]

I totally agree with @pento :) Thank you for this ticket, and also for all the other implicit reasons ;) Besides, I think that it's time to integrate Gutenberg as soon as possible in the core.

[pento]

Thank you for the patch, @mukesh27!

A couple of notes:

• Would you mind doing it against the 5.0 branch? That's the primary focus, we'll worry about backporting to the 4.9 branch later.
• You don't need to remove the reference in wp-admin/about.php, we're just removing the box from the Dashboard.

[mukesh27]

Updated patch as per Slack discussion with @pento.

[netweb]

Related: #45073 Upgrading to 5.0 and handling the Gutenberg plugin

[JoshuaWold]

Agreed with removing the callout. In #45073 I'll be sharing a sketch shortly with a much smaller callout suggestion.

[postphotos]

In our (@joshuawold + I) discussion yesterday, after this callout is removed we'd suggest a much quieter callout that nudges folks to still try the new editor, especially as it helps with on the new paths to be proposed in #45073, as well as help inform users of the big changes across the board.

As each admin updates to 5.0, some might be ready (and excited) for Gutenberg. Some may be hesitant and need assistance. Some might still want to experiment on a per-post or per-post-type basis. While we'd wish everyone would test changes as core as this in a staging environment, that definitely isn't the case for every site and they might.

A proposed callout to replace the current one could say to Classic-default sites:

• Try Gutenberg (a smaller version of what currently exists)
• Learn more about why and how

And to Guten-default sites:

• Learn more about why and how
• Get classic back (if you need it)
• "Beta" test by installing the Guten plugin

Should we break this out into a new issue, or is this the right place for this discussion?

[pento]

@postphotos: Let's keep new callout discussion to #45073 or a new issue, this one can just be for removing the old callout from 5.0 and 4.9 branches.

[pento]

In 43807:

Dashboard: Remove the Try Gutenberg callout.

Block or block not. There is no try.

Props mukesh27.
See #45063.

[pento]

Fixed in the 5.0 branch, leaving this ticket open for backporting to the 4.9 branch later.

[pento]

In 44106:

Dashboard: Remove the Try Gutenberg callout.

Merge of [43807] from the 5.0 branch.

Props mukesh27.
Fixes #45063.