[Pharo-project] [ANN] 10201

removed Object>>sixxInstVarAt removed FlapTabViewer improving cleaning ThumbnailMorph First pass finished on Object for etoy cleaning Left • Object (to fix later so far) • presenter • knownName • currentVocabulary • defaultNameStemForInstances • externalName • nameForViewer • objectRepresented • updateThresholdForGraphicInViewerTab • uniqueNameForReferenceOrNil • uniqueNameForReference started to clean ScriptingSystem