[Pharo-project] Possibly unnecessary yourself message

Check for methods sending the yourself message when it is not necessary. SmartRefStream>>#initKnownRenames BookMorph>>#forgetURLs FontChooserMorph>>#newPointSizeList FontChooserMorph>>#newFontStyleList FontChooserMorph>>#newFontList OBButtonBar>>#initGeometry MIMEType class>>#standardMIMETypes2 MIMEType class>>#standardMIMETypes MIMEType class>>#initializeDefaultSuffixes HTTPClient class>>#examplePostArgs HTTPClient class>>#examplePostMultipart LanguageEditor class>>#initCheckMethods Locale class>>#migrateSystem Locale class>>#initializePlatformEncodings