Remove CSSTouchAction runtime flag (status=stable)

Source/core/page/EventHandler.cpp

Index: Source/core/page/EventHandler.cpp
diff --git a/Source/core/page/EventHandler.cpp b/Source/core/page/EventHandler.cpp
index 5540228ddd663f5b739f800fee3943ad7ad0de71..3098a2a85bd6b99737961914d230993aa8cefaf0 100644
--- a/Source/core/page/EventHandler.cpp
+++ b/Source/core/page/EventHandler.cpp
@@ -3749,11 +3749,6 @@ TouchAction EventHandler::intersectTouchAction(TouchAction action1, TouchAction
 
 TouchAction EventHandler::computeEffectiveTouchAction(const Node& node)
 {
-    // Optimization to minimize risk of this new feature (behavior should be identical
-    // since there's no way to get non-default touch-action values).
-    if (!RuntimeEnabledFeatures::cssTouchActionEnabled())
-        return TouchActionAuto;
-
     // Start by permitting all actions, then walk the elements supporting
     // touch-action from the target node up to the nearest scrollable ancestor
     // and exclude any prohibited actions.