Delete hasStateForActiveDb as it is unused

Author: robertbrignull

extensions/ql-vscode/src/model-editor/modeling-store.ts

@@ -113,10 +113,6 @@ export class ModelingStore extends DisposableObject {
     return this.state.get(this.activeDb);
   }
 
-  public hasStateForActiveDb(): boolean {
-    return !!this.getStateForActiveDb();
-  }
-
   public anyDbsBeingModeled(): boolean {
     return this.state.size > 0;
   }