Remove XInitThreads from os::init since it will be called in the upcoming Device implementation

engine/os/linux/LinuxOS.cpp

@@ -274,8 +274,6 @@ const char* get_env(const char* env)
 //-----------------------------------------------------------------------------
 void init_os()
 {
-	XInitThreads();
-
 	// Initilize the base time
 	clock_gettime(CLOCK_MONOTONIC, &base_time);
 }