Remove showMultipleModels config

extensions/ql-vscode/src/config.ts

@@ -726,7 +726,6 @@ export interface ModelConfig {
   flowGeneration: boolean;
   llmGeneration: boolean;
   getExtensionsDirectory(languageId: string): string | undefined;
-  showMultipleModels: boolean;
   enableRuby: boolean;
 }
 
@@ -765,10 +764,6 @@ export class ModelConfigListener extends ConfigListener implements ModelConfig {
     });
   }
 
-  public get showMultipleModels(): boolean {
-    return true;
-  }
-
   public get enableRuby(): boolean {
     return !!ENABLE_RUBY.getValue<boolean>();
   }

extensions/ql-vscode/src/model-editor/method-modeling/method-modeling-view-provider.ts

@@ -48,7 +48,7 @@ export class MethodModelingViewProvider extends AbstractWebviewViewProvider<
       t: "setMethodModelingPanelViewState",
       viewState: {
         language: this.language,
-        showMultipleModels: this.modelConfig.showMultipleModels,
+        showMultipleModels: true,
       },
     });
   }

extensions/ql-vscode/src/model-editor/model-editor-view.ts

@@ -385,7 +385,7 @@ export class ModelEditorView extends AbstractWebview<
         language: this.language,
         showGenerateButton,
         showLlmButton,
-        showMultipleModels: this.modelConfig.showMultipleModels,
+        showMultipleModels: true,
         mode: this.modelingStore.getMode(this.databaseItem),
         showModeSwitchButton,
         sourceArchiveAvailable,