Remove schemata:schemata_json_schema from info.yml

Hi I reviewed it.

I agree with the solution in MR, this dependency isn't necessary.

Installation is working good now.

Moving to RTBC.

Problem 1
- drupal/openapi_rest[2.0.0-rc1, ..., 2.0.0-rc3] require drupal/schemata_json_schema * -> found drupal/schemata_json_schema[dev-1.x, 1.0.0-alpha1, ..., 1.x-dev (alias of dev-1.x)] but it does not match your minimum-stability.
- Root composer.json requires drupal/openapi_rest ^2.0@RC -> satisfiable by drupal/openapi_rest[2.0.0-rc1, 2.0.0-rc2, 2.0.0-rc3].

The solution to this is not to change the info file; the problem here is that you probably have minimum-stability: stable in your project's composer.json, but Schemata has no stable release. (You could likely get around this by running composer require drupal/schemata_json_schema:@alpha.)

I didn't write this module and don't know much about how it works, so I'm not really comfortable removing dependencies without knowing why they're there.

Agreed. This issue was created few years ago and should no longer be an issue.

BTW schemata_json_schema is indeed required, for example if you have the User module enabled.