Most of the time Kaspersky suite entries can't be deleted because they are protected by a Kaspersky program setting.
For example in Kaspersky Internet Security 6.0 there is a setting in "Service" > "Protection" called "Enable Selfdefense". You have to untick that setting and then Registry Cleaners (e.g. jv16 PowerTools or RegSupreme (Pro)) can clean those Kaspersky entries.
After cleaning you have to enable the Selfdefense setting again of course.