Issue #3504566: Add PerformanceTestTrait::clearCaches() so it is easier to use...

Issue #3504566: Add PerformanceTestTrait::clearCaches() so it is easier to use other performance tests

Closes #3504566

core/profiles/demo_umami/tests/src/FunctionalJavascript/OpenTelemetryFrontPagePerformanceTest.php

@@ -4,7 +4,6 @@
 
 namespace Drupal\Tests\demo_umami\FunctionalJavascript;
 
-use Drupal\Core\Cache\Cache;
 use Drupal\FunctionalJavascriptTests\PerformanceTestBase;
 
 /**
@@ -133,13 +132,4 @@ protected function testFrontPageCoolCache(): void {
     $this->assertMetrics($expected, $performance_data);
   }
 
-  /**
-   * Clear caches.
-   */
-  protected function clearCaches(): void {
-    foreach (Cache::getBins() as $bin) {
-      $bin->deleteAll();
-    }
-  }
-
 }