Remove explicit_bool_t, ignore, multicast<>

Remove vm::ptr operator %
This was a bad idea but explicit_bool_t was created almost for it
Other removed types are unused and have little to no meaning

Utilities/event.h

@@ -71,7 +71,7 @@ public:
 	}
 
 	// Conditionally set state (optimized)
-	explicit_bool_t state_test_and_set(T expected, T state)
+	bool state_test_and_set(T expected, T state)
 	{
 		if (m_value == expected && m_value.compare_and_swap_test(expected, state))
 		{
@@ -83,7 +83,7 @@ public:
 	}
 
 	// Conditionally set state (list version)
-	explicit_bool_t state_test_and_set(std::initializer_list<T> expected, T state)
+	bool state_test_and_set(std::initializer_list<T> expected, T state)
 	{
 		T _old;