16 calls to variable_del() in Drupal 4

forum_taxonomy in modules/forum.module

Implementation of hook_taxonomy().

node_search in modules/node.module

Implementation of hook_search().

system_settings_form_submit in modules/system.module

Execute the system_settings_form.

system_themes_submit in modules/system.module

system_theme_settings_submit in modules/system.module

system_update_119 in database/updates.inc

system_update_126 in database/updates.inc

system_update_132 in database/updates.inc

system_update_135 in database/updates.inc

system_update_137 in database/updates.inc

system_update_141 in database/updates.inc

system_update_151 in database/updates.inc

system_update_161 in database/updates.inc

system_update_165 in database/updates.inc

system_update_177 in database/updates.inc

update_fix_schema_version in ./update.php

If the schema version for Drupal core is stored in the variables table (4.6.x and earlier) move it to the schema_version column of the system table.