[Pharo-project] [update 3.0] #30063

30063 ----- 10413 clean up unused code in Scanner and Parser https://pharo.fogbugz.com/f/cases/1041 10414 Clean up preference Compiler warning (will come back later) https://pharo.fogbugz.com/f/cases/10414 10417 Some more Compiler related cleanUps https://pharo.fogbugz.com/f/cases/10417 Diff information: http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Traits-MarcusDenker.470 http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Kernel-MarcusDenker.1378 http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Settings-Compiler-MarcusDenke... http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/CompilerTests-MarcusDenker.13... http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Compiler-MarcusDenker.396