Bug 18069: Remove residue of rebuild_zebra -x

Bug 17731 removed the -x option of rebuild_zebra but koha-rebuild-zebra
still cals the script with this option.

"Warning: You passed -x which is already the default and is now deprecated"

Test plan:
sudo koha-rebuild-zebra -f
should no longer raise the warning

Signed-off-by: Mason James <mtj@kohaaloha.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>

Signed-off-by: Brendan A Gallagher <brendan@bywatersolutions.com>

debian/scripts/koha-rebuild-zebra

@@ -84,8 +84,6 @@ is to do an incremental rebuild.
 
 Usage: $scriptname [options] instancename1 instancename2...
 Options:
-    --usmarc|-u       Runs the process as USMARC rather than
-                      the default of MARCXML.
     --authorities|-a  Only run process for authorities.
     --biblios|-b      Only run process for biblios.
     --full|-f         Does a reindex of the whole collection.
@@ -101,7 +99,6 @@ EOF
 
 # Default parameters
 opt_idx="-z"
-opt_xml="-x"
 opt_verbose=""
 opts_other=""
 biblios_only="no"
@@ -127,9 +124,6 @@ while [ -n "$*" ]; do
         -a|--authorities)
             toggle_authorities_only
             ;;
-        -u|--usmarc)
-            opt_xml=""
-            ;;
         -f|--full)
             full_reindex="yes"
             opt_idx="-r"
@@ -173,7 +167,7 @@ do
     if is_instance $name; then
         if [ "$biblios" = "yes" ]; then
             if ! run_rebuild_zebra $name \
-                -b $opt_verbose $opt_idx $opt_xml $opts_other; then
+                -b $opt_verbose $opt_idx $opts_other; then
                 warn "Something went wrong rebuilding biblio indexes for $name"
             fi
         fi