closing feature #4370, delete unused class which is still defined in Silverpeas-Core
Merge branch 'feature-4370' of git://github.com/CecileBONIN/Silverpeas-Components into CecileBONIN-feature-4370

Conflicts:
	kmelia/kmelia-war/src/main/java/com/silverpeas/portlets/MyCheckOutFiles.java