refactor: removed version from wgu::ObjectInstance

it would be too inconvenient to implement :neocat_sob:

server/src/types.rs

@@ -4,7 +4,6 @@ use std::collections::HashMap;
 
 #[derive(Serialize, Deserialize, Debug, Default, Clone)]
 pub struct ObjectInstance {
-    pub version: u32,
     pub variant: u32,
     pub plotted: bool,
     pub created: String,