FLEX-33593 Remove mouse event listeners when removing items.
FLEX-33593 Remove mouse event listeners when removing items.

danteinforno/flex-sdk,apache/flex-sdk,adufilie/flex-sdk,danteinforno/flex-sdk,shyamalschandra/flex-sdk,shyamalschandra/flex-sdk,shyamalschandra/flex-sdk,danteinforno/flex-sdk,apache/flex-sdk,adufilie/flex-sdk,SlavaRa/flex-sdk,danteinforno/flex-sdk,SlavaRa/flex-sdk,shyamalschandra/flex-sdk,SlavaRa/flex-sdk,adufilie/flex-sdk,danteinforno/flex-sdk,apache/flex-sdk,shyamalschandra/flex-sdk,apache/flex-sdk,shyamalschandra/flex-sdk,SlavaRa/flex-sdk,adufilie/flex-sdk,adufilie/flex-sdk,danteinforno/flex-sdk,SlavaRa/flex-sdk,apache/flex-sdk,adufilie/flex-sdk,apache/flex-sdk,SlavaRa/flex-sdk