Lines in Dancer cookbook that look unnecessary to me

gistfile1.pl

# bin/script2.pl
#unnecessary use FindBin;
#unnecessary use Cwd qw/realpath/;
use Dancer ':script';

=pod 

Dancer already knows this

#tell the Dancer where the app lives
my $appdir=realpath( "$FindBin::Bin/..");

Dancer::Config::setting('appdir',$appdir);
Dancer::Config::load();

=cut

#getter
print "environment:".config->{environment}."\n"; #development
print "log:".config->{log}."\n"; #value from development environment