Deprecate feature //!import

Given that the JS engine used by OpenJS is Nashorn, which already has better methods for importing Java classes. Java.type, this is a comparison of two writing styles. OpenJS: //!import org.bukkit.Bukkit var Bukkit = org.bukkit.Bukkit; Nashorn: var Bukkit = Java.type("org.bukkit.Bukkit"); (Both of the above are available in the current OpenJS version) It can be seen that Nashorn's writing is more intuitive and simple, while Nashorn itself also provides methods to control which classes can be imported. But Import is not only more verbose, but may also cause variable names such as org and net to be occupied, resulting in unexpected errors, and is more likely to be redundant and unnecessary features.