8237003: Remove hardcoded WebAnimationsCSSIntegrationEnabled flag in DumpRenderTree

Reviewed-by: kcr

Author: Guru Hb

modules/javafx.web/src/main/java/com/sun/javafx/webkit/drt/DumpRenderTree.java

@@ -196,7 +196,6 @@ private static void initPlatform() throws Exception {
     private void resetToConsistentStateBeforeTesting(final TestOptions options) {
         // Assign default values for all supported TestOptions
         webPage.overridePreference("experimental:CSSCustomPropertiesAndValuesEnabled", "false");
-        webPage.overridePreference("experimental:WebAnimationsCSSIntegrationEnabled", "true");
         webPage.overridePreference("enableColorFilter", "false");
         webPage.overridePreference("enableIntersectionObserver", "false");
         // Enable features based on TestOption