I'm on a network with 2 printers and want to uninstall only one.  How do I do it?

I recently added a Lexmark E260dn printer to my network (still want to have my HP 8550 connected).
The printer was faulty so took it back, but want to install another one.  How do I "uninstall" just the old info for the Lexmark without losing my HP info?

For username and password, you need to use the username and password for someone that has an administrator account. If you have an admin type account, then just use your username (the short one, which is the name of your home directory) and password.
If not, you need the username and password of someone that does have an admin type account on your computer.
It need not have any relationship to any account used to set up the system or any software on it.
If you can do software updates using your name and password, then you are an admin user. Use your username (the short one, not your full name) and your password.
You can get your short username in Terminal:
echo $LOGNAME

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