prerm is in nslint 3.0a2-1.1.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10  | #!/bin/sh
set -e
PACKAGE=nslint
# on upgrade and removal, remove /usr/doc/$PACKAGE link if it exists
if ( [ "$1" = "upgrade" ] || [  "$1" = "remove" ] ) \
    && [ -L /usr/doc/$PACKAGE ]; then
        rm -f /usr/doc/$PACKAGE
fi
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