def remove_selection(self,locator,optionLocator):
self.do_command("<STR_LIT>", [locator,optionLocator,])<EOL>
Remove a selection from the set of selected options in a multi-select element using an option locator.

@see #doSelect for details of option locators

'locator' is an element locator identifying a multi-select box
'optionLocator' is an option locator (a label by default)