Revert "Oilpan: Expand HashTableBacking buffer when possible"

Source/wtf/DefaultAllocator.h

Index: Source/wtf/DefaultAllocator.h
diff --git a/Source/wtf/DefaultAllocator.h b/Source/wtf/DefaultAllocator.h
index 2d1ed7932c2a095b04c8bf81d9cec567d4f65289..2dbab6b202dd0e37545b7c02f986d39680439305 100644
--- a/Source/wtf/DefaultAllocator.h
+++ b/Source/wtf/DefaultAllocator.h
@@ -105,11 +105,6 @@ public:
     {
         return reinterpret_cast<Return>(fastMalloc(size));
     }
-
-    WTF_EXPORT static inline bool expandHashTableBacking(void*, size_t)
-    {
-        return false;
-    }
     static void free(void* address)
     {
         fastFree(address);