Remove now-unnecessary VectorTraits specializations.

Source/wtf/VectorTest.cpp

Index: Source/wtf/VectorTest.cpp
diff --git a/Source/wtf/VectorTest.cpp b/Source/wtf/VectorTest.cpp
index 3c1e4783e83e071bf2d14d519c87c356422abfab..1f31e287ee135a731bc450e9cc771125b5aec193 100644
--- a/Source/wtf/VectorTest.cpp
+++ b/Source/wtf/VectorTest.cpp
@@ -286,7 +286,6 @@ TEST(VectorTest, SwapWithInlineCapacity)
 
 class Comparable {
 };
-bool operator==(const Comparable& a, const Comparable& b) { return true; }
 
 template<typename T> void compare()
 {
@@ -302,4 +301,18 @@ TEST(VectorTest, Compare)
     compare<Comparable>();
     compare<WTF::String>();
 }
+
+class PODTest {
+public:
+    Comparable m_struct;
+    WTF::WeakHandlingFlag m_enum;
+};
+
+TEST(VectorTest, Traits)
+{
+    // FIXME: expand, test more types.
+    COMPILE_ASSERT(!WTF::VectorTraits<PODTest>::needsDestruction, ExpectedToHaveATrivialDestructor);
+    COMPILE_ASSERT(WTF::VectorTraits<PODTest>::canInitializeWithMemset, ExpectedToBeInitializableWithMemset);
+}
+
 } // namespace