FEXCore: Move two functions to the frontend

Only used in the frontend and is OS specific.

FEXCore/Source/Utils/Threads.cpp

@@ -5,10 +5,6 @@
 
 #include <pthread.h>
 #include <unistd.h>
-#ifndef _WIN32
-#include <sys/signal.h>
-#include <sys/syscall.h>
-#endif
 
 namespace FEXCore::Threads {
 static fextl::unique_ptr<FEXCore::Threads::Thread> CreateThread_Default(ThreadFunc Func, void* Arg) {
@@ -35,21 +31,4 @@ void FEXCore::Threads::Thread::CleanupAfterFork() {
 void FEXCore::Threads::Thread::SetInternalPointers(const Pointers& _Ptrs) {
   Ptrs = _Ptrs;
 }
-
-uint64_t SetSignalMask(uint64_t Mask) {
-#ifndef _WIN32
-  ::syscall(SYS_rt_sigprocmask, SIG_SETMASK, &Mask, &Mask, 8);
-  return Mask;
-#else
-  return 0;
-#endif
-}
-
-void SetThreadName(const char* name) {
-#ifndef _WIN32
-  pthread_setname_np(pthread_self(), name);
-#else
-  // TODO:
-#endif
-}
 } // namespace FEXCore::Threads