I wouldn't do anything. Just because older guns had no block doesn't mean a gun will be better without it. (Old cars had mechanical brakes, too, but I don't plan to replace my hydraulic brakes with brake rods.) More important, if you do drop a loaded gun and it goes off, your removal of a safety feature will prove to almost anyone (read "any jury") that you are careless, negligent and have no regard for safety.
Jim