Revert "Temporary fix (which breaks the LSP server) to prevent compil…

…e errors in Eclipse"

This reverts commit ee19274.

org.lflang.diagram/src/org/lflang/diagram/lsp/Progress.java

@@ -101,6 +101,6 @@ public void end(String message) {
      * @param notification
      */
     private void notifyProgress(WorkDoneProgressNotification notification) {
-        client.notifyProgress(new ProgressParams(Either.forRight(token), Either.forLeft(notification)));
+        client.notifyProgress(new ProgressParams(Either.forRight(token), notification));
     }
 }