UNINSTALL PLUGIN plugin_name
plugin_name must be the name of some plugin that is listed
in the mysql.plugin table. The server executes the plugin's deinitialization
function and removes the row for the plugin from the mysql.plugin
table, so that subsequent server restarts will not load and initialize
UNINSTALL PLUGIN does not remove the plugin's
shared library file.
UNINSTALL PLUGIN, you must have the
DELETE privilege for the mysql.plugin table.