How to remove the message "vim-minimap" [New File]" after vim-minimap intallation?

Question

I installed vim-minimap with Vundle adding this line to my ~/.vimrc

Plugin 'severin-lemaignan/vim-minimap'

and I added Minimap in my ~/.gvimrc

Now everytime I launch a gvim from the terminal, with or without arguments, I get the message "vim-minimap" [New File] in the terminal.

How can I avoid having this message?