Removed dead code for the now-removed Thread:kill

src/modules/thread/Thread.h

@@ -36,7 +36,6 @@ public:
 	virtual ~Thread() {}
 	virtual bool start() = 0;
 	virtual void wait() = 0;
-	virtual void kill() = 0;
 }; // ThreadObject
 
 } // thread

src/modules/thread/sdl/Thread.cpp

@@ -68,17 +68,6 @@ void Thread::wait()
 	thread = 0;
 }
 
-void Thread::kill()
-{
-	Lock l(mutex);
-	if (!running)
-		return;
-	SDL_KillThread(thread);
-	SDL_WaitThread(thread, 0);
-	running = false;
-	thread = 0;
-}
-
 int Thread::thread_runner(void *data)
 {
 	Thread *self = (Thread *) data; // some compilers don't like 'this'

src/modules/thread/sdl/Thread.h

@@ -47,7 +47,6 @@ public:
 	Thread(Threadable *t);
 	~Thread();
 	bool start();
-	void kill();
 	void wait();
 }; // Thread
 } // sdl

src/modules/thread/threads.cpp

@@ -93,10 +93,5 @@ void Threadable::wait()
 	owner->wait();
 }
 
-void Threadable::kill()
-{
-	owner->kill();
-}
-
 } // thread
 } // love

src/modules/thread/threads.h

@@ -82,7 +82,6 @@ public:
 
 	bool start();
 	void wait();
-	void kill();
 
 protected:
 	Thread *owner;