Remove vestigial backwards syncing functionality.

This functionality won't be present until the refactor in 0.5.0

server/src/plugin.rs

@@ -9,13 +9,6 @@ pub enum TransformFileResult {
     // TODO: Error case
 }
 
-pub enum RbxChangeResult {
-    Write(Option<VfsItem>),
-    Pass,
-
-    // TODO: Error case
-}
-
 pub enum FileChangeResult {
     MarkChanged(Option<Vec<Route>>),
     Pass,
@@ -26,10 +19,6 @@ pub trait Plugin {
     /// into a Roblox instance.
     fn transform_file(&self, plugins: &PluginChain, vfs_item: &VfsItem) -> TransformFileResult;
 
-    /// Invoked when a Roblox Instance change is reported by the Roblox Studio
-    /// plugin and needs to be turned into a file to save.
-    fn handle_rbx_change(&self, route: &Route, rbx_item: &RbxInstance) -> RbxChangeResult;
-
     /// Invoked when a file changes on the filesystem. The result defines what
     /// routes are marked as needing to be refreshed.
     fn handle_file_change(&self, route: &Route) -> FileChangeResult;
@@ -58,17 +47,6 @@ impl PluginChain {
         None
     }
 
-    pub fn handle_rbx_change(&self, route: &Route, rbx_item: &RbxInstance) -> Option<VfsItem> {
-        for plugin in &self.plugins {
-            match plugin.handle_rbx_change(route, rbx_item) {
-                RbxChangeResult::Write(vfs_item) => return vfs_item,
-                RbxChangeResult::Pass => {},
-            }
-        }
-
-        None
-    }
-
     pub fn handle_file_change(&self, route: &Route) -> Option<Vec<Route>> {
         for plugin in &self.plugins {
             match plugin.handle_file_change(route) {