remove "reversed" warning message

(not needed now that tube breaking is reliable)

item_transport.lua

@@ -296,7 +296,6 @@ luaentity.register_entity("pipeworks:tubed_item", {
 					end
 				else
 					if minetest.get_item_group(rev_node.name,"tube") == 1 then
-						print("[Pipeworks] Warning - tubed item had to reverse direction at "..minetest.pos_to_string(self.start_pos))
 						velocity = vector.multiply(velocity, -1)
 						self:setpos(vector.subtract(self.start_pos, vector.multiply(vel, moved_by - 1)))
 						self:setvelocity(velocity)