/usr/share/vim/vim74/indoff.vim is in vim-runtime 2:7.4.488-7+deb8u3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 | " Vim support file to switch off loading indent files for file types
"
" Maintainer: Bram Moolenaar <Bram@vim.org>
" Last Change: 2001 Jun 11
if exists("did_indent_on")
unlet did_indent_on
endif
" Remove all autocommands in the filetypeindent group
silent! au! filetypeindent *
|