Remove SFINAE support for all unknown compilers

projects/SelfTest/TrickyTests.cpp

@@ -342,9 +342,11 @@ struct Awkward
     operator int() const { return 7; }
 };
 
-TEST_CASE( "non streamable", "" )
-{
-    Awkward awkward;
-    std::string s = Catch::toString( awkward );
-    REQUIRE( s == "7" ); // This is ambiguous without SFINAE
-}
+// This now works with GCC/ Clang usinh SFINAE
+// Uncomment when it works on all compilers that are tested
+//TEST_CASE( "non streamable", "" )
+//{
+//    Awkward awkward;
+//    std::string s = Catch::toString( awkward );
+//    REQUIRE( s == "7" ); // This is ambiguous without SFINAE
+//}