chore: drop unsupported platforms

[kumo01GitHub]

Platforms affected

• Amazon Fire OS
• BlackBerry 10
• Tizen
• Windows Phone 8
• Windows 8

Motivation and Context

Below platforms are not supported now:

• Amazon Fire OS
• BlackBerry 10
• Tizen
• Windows Phone 8
• Windows 8

Description

Update documents. This change seems not to affect any scripts.

Testing

N/A

Checklist

• I've run the tests to see all new and existing tests pass
• I added automated test coverage as appropriate for this change
• Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• I've updated the documentation if necessary

[erisu]

Looks good to me.

It appears that the platforms were removed from cordova-lib several versions prior to the version this package depends on, which makes it safe to remove them from the plugman README documentation.