[kutil] Remove ctor workaround in slab_allocated

Before global constructors were working, I had added a hack to zero out
the static vector member of in `slab_allocated`. Now that they are
working, this can be removed.

src/libraries/kutil/include/kutil/slab_allocated.h

@@ -25,11 +25,6 @@ public:
 
 	void operator delete(void *p) { s_free.append(reinterpret_cast<T*>(p)); }
 
-	// TODO: get rid of this terribleness
-	static void hacky_init_remove_me() {
-		memset(&s_free, 0, sizeof(s_free));
-	}
-
 private:
 	static void allocate_chunk()
 	{

src/libraries/kutil/vm_space.cpp

@@ -12,9 +12,6 @@ DEFINE_SLAB_ALLOCATOR(node_type, 1);
 
 vm_space::vm_space(uintptr_t start, size_t size)
 {
-	// TODO: replace this with real global ctor
-	slab_allocated<node_type>::hacky_init_remove_me();
-
 	node_type *node = new node_type;
 	node->address = start;
 	node->size = size;