def removeIndexOnAttribute(self, attributeName):
        '''
            removeIndexOnAttribute - Remove an attribute from indexing (for getElementsByAttr function) and remove indexed data.

        @param attributeName <lowercase str> - An attribute name. Will be lowercased. "name" and "id" will have no effect.
        '''
        attributeName = attributeName.lower()
        if attributeName in self.otherAttributeIndexFunctions:
                del self.otherAttributeIndexFunctions[attributeName]
        if attributeName in self._otherAttributeIndexes:
                del self._otherAttributeIndexes[attributeName]