[Pharo-project] [ANN] 10082 More etoy cleaning

Hi all I'm slowing going over gary's fixes and cleaning etoy. Etoy cleaning from gary (continued) Removed UndefinedObjectTest>>testNewTileMorphRepresentative Removed BooleanTest>>testNewTileMorphRepresentative Removed BookMorph>>chooseAndRevertToVersion Removed BookMorph>>revertToCheckpoint: secsSince1901 BookMorph>>installRollBackButtons BookMorph>>methodHolderVersions BookMorph>>methodHolders BookMoprh>>goToPageMorph: transitionSpec: runTransitionScripts: BookMorph>>goToPageMorph: transitionSpec: TabbedPalette>>selectTab: cleaned Removed TabbedPalette>>becomeStandPalette Removed>>currentPlayerDo: and fixed sender EncodedCharSet fixed initialize stef