Step 1.

Go to the menu bar, Select the Tools Menu. Then select Disable Password Protection'. See (Fig 1a) for a picture of which menu item to choose.

    (Fig 1a)

Step 2.

Once you've enabled a password, if you wish to disable it, you must first input the password correctly. (See Fig 2a)

    (Fig 2a)

After this is done, the password will automatically become disabled.