Change POSIX import to prevent it importing unused functions (e.g. remove...

Change POSIX import to prevent it importing unused functions (e.g. remove which conflicts with the remove method defined in Gene).

modules/Bio/EnsEMBL/Gene.pm

@@ -44,7 +44,7 @@ Please post comments/questions to the Ensembl development list
 
 use strict;
 
-use POSIX;
+use POSIX ();
 use Bio::EnsEMBL::Feature;
 use Bio::EnsEMBL::Utils::Argument qw(rearrange);
 use Bio::EnsEMBL::Utils::Exception qw(throw warning deprecate);