Remove dead variable

tests/core/container/test_core_avl.odin

@@ -20,7 +20,6 @@ test_avl :: proc(t: ^testing.T) {
 	iter := avl.iterator(&tree, avl.Direction.Forward)
 	testing.expect(t, avl.iterator_get(&iter) == nil, "empty/iterator: first node should be nil")
 
-	r: rand.Rand
 	r := rand.create(t.seed)
 	context.random_generator = rand.default_random_generator(&r)
 

tests/core/container/test_core_rbtree.odin

@@ -14,7 +14,6 @@ test_rbtree_integer :: proc(t: ^testing.T, $Key: typeid, $Value: typeid) {
 	defer mem.tracking_allocator_destroy(&track)
 	context.allocator = mem.tracking_allocator(&track)
 
-	r: rand.Rand
 	r := rand.create(t.seed)
 	context.random_generator = rand.default_random_generator(&r)