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/cond.cpp

@@ -185,7 +185,7 @@ u32 notifier::imp_notify(u32 count)
 	});
 }
 
-explicit_bool_t notifier::wait(u64 usec_timeout)
+bool notifier::wait(u64 usec_timeout)
 {
 	const u32 _old = m_cond.m_value.fetch_add(1);