RefCountedLeakDetector: Remove unused methods for suppressing leaks

Source/wtf/RefCountedLeakCounter.h

Index: Source/wtf/RefCountedLeakCounter.h
diff --git a/Source/wtf/RefCountedLeakCounter.h b/Source/wtf/RefCountedLeakCounter.h
index 2284dd7f9999412b2828eb8f11d2c97eabfec476..3b49d9486214fcf2e040c89c228e6744a412b4c7 100644
--- a/Source/wtf/RefCountedLeakCounter.h
+++ b/Source/wtf/RefCountedLeakCounter.h
@@ -27,9 +27,6 @@
 namespace WTF {
 
     struct WTF_EXPORT RefCountedLeakCounter {
-        static void suppressMessages(const char*);
-        static void cancelMessageSuppression(const char*);
-
         explicit RefCountedLeakCounter(const char* description);
         ~RefCountedLeakCounter();