Remove ill-formed asserts

Common/Thread/Promise.h

@@ -79,7 +79,6 @@ public:
 
 	// Returns T if the data is ready, nullptr if it's not.
 	T Poll() {
-		_dbg_assert_(this != nullptr);
 		std::lock_guard<std::mutex> guard(readyMutex_);
 		if (ready_) {
 			return data_;
@@ -96,7 +95,6 @@ public:
 	}
 
 	T BlockUntilReady() {
-		_dbg_assert_(this != nullptr);
 		std::lock_guard<std::mutex> guard(readyMutex_);
 		if (ready_) {
 			return data_;