Revert "add untested function"

This reverts commit c078dd87fa.

src/state/ObservableScope.ts

@@ -18,9 +18,7 @@ import {
   share,
   take,
   takeUntil,
-  tap,
 } from "rxjs";
-import { logger } from "matrix-js-sdk/lib/logger";
 
 import { type Behavior } from "./Behavior";
 
@@ -158,17 +156,6 @@ export class ObservableScope {
       });
   }
 
-  public unTestedMethod$<T>(input$: Behavior<T>): Observable<T> {
-    // This method is intentionally left untested.
-    return input$.pipe(
-      map((value) => value),
-      distinctUntilChanged(),
-      tap((value) => {
-        logger.log(`Value changed: ${value}`);
-      }),
-    );
-  }
-
   /**
    * Splits a Behavior of objects with static properties into an object with
    * Behavior properties.