hle: kernel: AddressArbiter: Remove unused code.

src/core/hle/kernel/address_arbiter.cpp

@@ -275,12 +275,6 @@ ResultCode AddressArbiter::WaitForAddressIfEqual(VAddr address, s32 value, s64 t
     return current_thread->GetSignalingResult();
 }
 
-void AddressArbiter::HandleWakeupThread(std::shared_ptr<Thread> thread) {
-    ASSERT(thread->GetStatus() == ThreadStatus::WaitArb);
-    RemoveThread(thread);
-    thread->SetArbiterWaitAddress(0);
-}
-
 void AddressArbiter::InsertThread(std::shared_ptr<Thread> thread) {
     const VAddr arb_addr = thread->GetArbiterWaitAddress();
     std::list<std::shared_ptr<Thread>>& thread_list = arb_threads[arb_addr];

src/core/hle/kernel/address_arbiter.h

@@ -50,9 +50,6 @@ public:
     /// Waits on an address with a particular arbitration type.
     ResultCode WaitForAddress(VAddr address, ArbitrationType type, s32 value, s64 timeout_ns);
 
-    /// Removes a thread from the container and resets its address arbiter adress to 0
-    void HandleWakeupThread(std::shared_ptr<Thread> thread);
-
 private:
     /// Signals an address being waited on.
     ResultCode SignalToAddressOnly(VAddr address, s32 num_to_wake);