diff --git a/src/abstractions/platformUtils.service.ts b/src/abstractions/platformUtils.service.ts
index 3329761c2c..d9902c2eec 100644
--- a/src/abstractions/platformUtils.service.ts
+++ b/src/abstractions/platformUtils.service.ts
@@ -9,9 +9,5 @@ export interface PlatformUtilsService {
     isOpera(): boolean;
     analyticsId(): string;
     getDomain(uriString: string): string;
-    inSidebar(theWindow: Window): boolean;
-    inTab(theWindow: Window): boolean;
-    inPopout(theWindow: Window): boolean;
-    inPopup(theWindow: Window): boolean;
     isViewOpen(): boolean;
 }