Remove Gamepad runtime flag (status=stable) for blink

Source/modules/gamepad/NavigatorGamepad.cpp

Index: Source/modules/gamepad/NavigatorGamepad.cpp
diff --git a/Source/modules/gamepad/NavigatorGamepad.cpp b/Source/modules/gamepad/NavigatorGamepad.cpp
index 37b2d01e449cbc6c1a7b819278fd3dc9579b6684..dd60ce0c8116bae92dae42f08a6eb677d7927b47 100644
--- a/Source/modules/gamepad/NavigatorGamepad.cpp
+++ b/Source/modules/gamepad/NavigatorGamepad.cpp
@@ -35,7 +35,6 @@
 #include "modules/gamepad/GamepadEvent.h"
 #include "modules/gamepad/GamepadList.h"
 #include "modules/gamepad/WebKitGamepadList.h"
-#include "platform/RuntimeEnabledFeatures.h"
 
 namespace blink {
 
@@ -228,7 +227,7 @@ static bool isGamepadEvent(const AtomicString& eventType)
 
 void NavigatorGamepad::didAddEventListener(LocalDOMWindow*, const AtomicString& eventType)
 {
-    if (RuntimeEnabledFeatures::gamepadEnabled() && isGamepadEvent(eventType)) {
+    if (isGamepadEvent(eventType)) {
         if (page() && page()->visibilityState() == PageVisibilityStateVisible)
             startUpdating();
         m_hasEventListener = true;