remove unused Data::Dumper usages

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

PVE/Storage/Plugin.pm

@@ -2,14 +2,14 @@ package PVE::Storage::Plugin;
 
 use strict;
 use warnings;
+
 use File::chdir;
 use File::Path;
+
 use PVE::Tools qw(run_command);
 use PVE::JSONSchema qw(get_standard_option);
 use PVE::Cluster qw(cfs_register_file);
 
-use Data::Dumper;
-
 use base qw(PVE::SectionConfig);
 
 our @COMMON_TAR_FLAGS = qw(