Remove global condition waiter registry that deadlocks exception delivery

Co-authored-by: Bipin <bipinkrish4@gmail.com>

src/kernel/pthread.cpp

@@ -3093,10 +3093,6 @@ Pthread PthreadSwapSelfForSignal(Pthread thread) {
 	return previous;
 }
 
-int PthreadGetUniqueId(Pthread thread) {
-	return thread != nullptr ? thread->unique_id : 0;
-}
-
 uint64_t PthreadGetHostThreadId(Pthread thread) {
 	return thread != nullptr ? thread->host_thread_id : 0;
 }

src/kernel/pthread.h

@@ -110,7 +110,6 @@ int KYTY_SYSV_ABI     PthreadRename(Pthread thread, const char* name);
 void KYTY_SYSV_ABI    PthreadYield();
 int KYTY_SYSV_ABI     PthreadGetthreadid();
 int KYTY_SYSV_ABI     PthreadGetaffinity(Pthread thread, KernelCpumask* mask);
-int                   PthreadGetUniqueId(Pthread thread);
 uint64_t              PthreadGetHostThreadId(Pthread thread);
 void                  PthreadWakeForSignal(Pthread thread);
 void                  PthreadQueuePendingSignal(Pthread thread, int signum);