Revert "Overflow test for large types in Math::normalize() started working."

It was working because of some weird state of my build dir, expecting
fail again.

This reverts commit 75d0505a60.

src/Math/Test/MathTest.cpp

@@ -73,8 +73,12 @@ void MathTest::denormalize() {
 
     CORRADE_COMPARE(Math::denormalize<int>(1.0), numeric_limits<int>::max());
     CORRADE_COMPARE(Math::denormalize<unsigned int>(1.0), numeric_limits<unsigned int>::max());
+
+    {
+        CORRADE_EXPECT_FAIL("Denormalize doesn't work for large types well");
         CORRADE_COMPARE((Math::denormalize<long long, long double>(1.0)), numeric_limits<long long>::max());
         CORRADE_COMPARE((Math::denormalize<unsigned long long, long double>(1.0)), numeric_limits<unsigned long long>::max());
+    }
 }
 
 void MathTest::clamp() {