W: Target Packages (Packages) is configured multiple times in /etc/apt/sources.list:51 and /etc/apt/sources.list.d/sublime-text.list:1 [duplicate]

Ran: sudo apt-get update

Output:

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Reading package lists... Done
W: Target Packages (Packages) is configured multiple times in /etc/apt/sources.list:51 and /etc/apt/sources.list.d/sublime-text.list:1

sources.list

deb http://security.ubuntu.com/ubuntu bionic-security main restricted
# deb-src http://security.ubuntu.com/ubuntu bionic-security main restricted
deb http://security.ubuntu.com/ubuntu bionic-security universe
# deb-src http://security.ubuntu.com/ubuntu bionic-security universe
deb http://security.ubuntu.com/ubuntu bionic-security multiverse
deb https://download.sublimetext.com/ apt/stable/
# deb-src https://download.sublimetext.com/ apt/stable/
# deb-src http://security.ubuntu.com/ubuntu bionic-security multiverse
deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main

How to resolve it?

Edit: I have referred How can I fix apt error "W: Target Packages ... is configured multiple times"? But this didn't helped.