remove unused module use

diff --git a/server.pl b/server.pl
index 40c1ff0..507be61 100755 (executable)
--- a/server.pl
+++ b/server.pl
@@ -215,7 +215,6 @@ sub render {
 package Net::Z3950::RPN::Term;
 
 use Data::Dump qw(dump);
-use COBISS;
 
 sub render {
        my ($self,$usemap) = @_;