Removed no more needed checks to go sub-programs

[cmaglie]

Please check if the PR fulfills these requirements

See how to contribute

• The PR has no duplicates (please search among the Pull Requests
  before creating one)
• The PR follows
  our contributing guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)
• UPGRADING.md has been updated with a migration guide (for breaking changes)
• configuration.schema.json updated if new parameters are added.

What kind of change does this PR introduce?

Since the following:

• arduino/discovery/discovery_client
• client_example
• commands/daemon/term_example
• docsgen

are no more separate go modules there is no more need to run vet, fix, lint, fmt, and tidy on all of them.

What is the current behavior?

What is the new behavior?

Does this PR introduce a breaking change, and is titled accordingly?

Other information

[umbynos]

Please remove also:

https://github.com/cmaglie/arduino-cli/blob/9bc0161575b8e787c3f5293e461915eae8a2ff9b/.licensed.yml#L10-L13 (see https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/check-go-dependencies-task.md#project-paths)