--- xnu/xnu-12377.101.15/iokit/Kernel/IOLocks.cpp
+++ xnu/xnu-10063.121.3/iokit/Kernel/IOLocks.cpp
@@ -94,24 +94,10 @@
 	           (wait_interrupt_t) interType, __OSAbsoluteTime(deadline));
 }
 
-int
-IOLockSleepWithInheritor( IOLock *lock, UInt32 lck_sleep_action,
-    void *event, thread_t inheritor, UInt32 interType, uint64_t deadline)
-{
-	return (int) lck_mtx_sleep_with_inheritor(lock, (lck_sleep_action_t) lck_sleep_action, (event_t) event, inheritor,
-	           (wait_interrupt_t) interType, deadline);
-}
-
 void
 IOLockWakeup(IOLock * lock, void *event, bool oneThread)
 {
 	thread_wakeup_prim((event_t) event, oneThread, THREAD_AWAKENED);
-}
-
-void
-IOLockWakeupAllWithInheritor(IOLock * lock, void *event)
-{
-	wakeup_all_with_inheritor((event_t) event, THREAD_AWAKENED);
 }