Index: openacs-4/packages/xowiki/tcl/xowiki-utility-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/xowiki-utility-procs.tcl,v
diff -u -r1.6 -r1.7
--- openacs-4/packages/xowiki/tcl/xowiki-utility-procs.tcl	8 May 2009 09:12:15 -0000	1.6
+++ openacs-4/packages/xowiki/tcl/xowiki-utility-procs.tcl	5 Nov 2009 12:34:16 -0000	1.7
@@ -37,6 +37,14 @@
     }
   }
 
+  proc delete_parameter {from} {
+    set parameter_obj [::xo::parameter get_parameter_object \
+                           -parameter_name $from -package_key xowiki]
+    if {$parameter_obj eq ""} {error "no such parameter $from"}
+    apm_parameter_unregister -package_key [$parameter_obj package_key] [string trimleft $parameter_obj :]
+    $parameter_obj destroy
+  }
+
   ad_proc fix_all_package_ids {} {
     earlier versions of openacs did not have the package_id set correctly
     in acs_objects; this proc updates the package_ids of all items