Incomplete line from .bash_profile

[demandingatomiser]

I'm experiencing some trouble with the shell scripts. To start, I am on macOS Big Sur (Version 11.0.1). With this, I put the code from .bash_profile in .zshrc. When I open a terminal, it loads the below line (from .bash_prompt) and I seem to be unable to remove it.

\[\]\[\]\w\[\]$([[ -n $(git branch 2> /dev/null) ]] && echo " on ")\[\]$(parse_git_branch)\[\]\n$ \[\]