more fixes for Code

Signed-off-by: Esteban Papp <81431996+amznestebanpapp@users.noreply.github.com>

Code/Framework/AzCore/Tests/Rtti.cpp

@@ -171,7 +171,6 @@ namespace UnitTest
             AZ_TEST_ASSERT(AzGenericTypeInfo::Uuid<MyClassTemplateType>() == templateUuid);
 
             // Check all combinations return a valid id.
-            Uuid nullId = Uuid::CreateNull();
             AZ_TEST_ASSERT(AzGenericTypeInfo::Uuid<AZStd::array>() == AZ::Uuid("{911B2EA8-CCB1-4F0C-A535-540AD00173AE}"));
             AZ_TEST_ASSERT(AzGenericTypeInfo::Uuid<AZStd::bitset>() == AZ::Uuid("{6BAE9836-EC49-466A-85F2-F4B1B70839FB}"));
             AZ_TEST_ASSERT(AzGenericTypeInfo::Uuid<AZStd::function>() == AZ::Uuid("{C9F9C644-CCC3-4F77-A792-F5B5DBCA746E}"));
@@ -460,8 +459,8 @@ namespace UnitTest
     TEST_F(Rtti, IsAbstract)
     {
         // compile time proof that the two non-abstract classes are not abstract at compile time:
-        ExampleFullImplementationClass one;
-        ExampleCombined two;
+        [[maybe_unused]] ExampleFullImplementationClass one;
+        [[maybe_unused]] ExampleCombined two;
 
         ASSERT_NE(GetRttiHelper<ExampleAbstractClass>(), nullptr);
         ASSERT_NE(GetRttiHelper<ExampleFullImplementationClass>(), nullptr);