Update to modern squashfs parameters.

The le/be flags have been removed for some time.

xCAT-server/lib/xcat/plugins/packimage.pm

@@ -579,11 +579,6 @@ sub process_request {
         umask $oldmask;
     } elsif ($method =~ /squashfs/) {
         my $flags;
-        if ($arch =~ /x86/) {
-            $flags = "-le";
-        } elsif ($arch =~ /ppc/) {
-            $flags = "-be";
-        }
 
         if ($osver =~ /rhels/ && $osver !~ /rhels5/) {
             $flags = "";