Bug 20018: use Modern::Perl in offline_circ scripts

Test Plan:
- Check that it now says 'use Modern::Perl' and not 'use trict; use
warnings;' in the follwing plugins perl scripts

enqueue_koc.pl
list.pl
process.pl
process_koc.pl
service.pl

Signed-off-by: Jon Knight <J.P.Knight@lboro.ac.uk>

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

offline_circ/enqueue_koc.pl

@@ -18,8 +18,7 @@
 # along with Koha; if not, see <http://www.gnu.org/licenses>.
 #
 
-use strict;
-use warnings;
+use Modern::Perl;
 
 use CGI qw ( -utf8 );
 use C4::Output;

offline_circ/list.pl

@@ -18,8 +18,7 @@
 # along with Koha; if not, see <http://www.gnu.org/licenses>.
 #
 
-use strict;
-use warnings;
+use Modern::Perl;
 
 use CGI qw ( -utf8 );
 use C4::Output;

offline_circ/process.pl

@@ -18,8 +18,7 @@
 # along with Koha; if not, see <http://www.gnu.org/licenses>.
 #
 
-use strict;
-use warnings;
+use Modern::Perl;
 
 use CGI qw ( -utf8 );
 use C4::Auth;

offline_circ/process_koc.pl

@@ -18,8 +18,7 @@
 # along with Koha; if not, see <http://www.gnu.org/licenses>.
 #
 
-use strict;
-use warnings;
+use Modern::Perl;
 
 use CGI qw ( -utf8 );
 use Carp;

offline_circ/service.pl

@@ -18,8 +18,7 @@
 # along with Koha; if not, see <http://www.gnu.org/licenses>.
 #
 
-use strict;
-use warnings;
+use Modern::Perl;
 
 use CGI qw ( -utf8 );
 use C4::Auth;