execute (Debugger::DeleteBreakpointCommand)

    # File cli/ruby-debug/commands/breakpoints.rb, line 120
        def execute
          unless @state.context
            errmsg "We are not in a state we can delete breakpoints.\n"
            return
          end
          brkpts = @match[1]
          unless brkpts
            if confirm("Delete all breakpoints? (y or n) ")
              Debugger.breakpoints.clear
            end
          else
            brkpts.split(/[ \t]+/).each do |pos|
              pos = get_int(pos, "Delete", 1)
              return unless pos
              unless Debugger.remove_breakpoint(pos)
                errmsg "No breakpoint number %d\n", pos
              end
            end
          end
        end