BB Bold 9000 :: Removing Sample Media Files?

There are three sample movies sitting in the system folder (BMW M3, Speedracer trailer and a Delta Goodrem music video) which take up about 85MB of memory. I have tried using maxmem from Berrycoder to remove the files, but it won't delete these videos from the memory.Using FileScout, I try to delete the files and the response is "cannot delete the file, it is an OS5.0 read only system file". Is there any way of deleting these files on the Bold 9000? I have read up on Crackberry on optimising the memory and trying to use BBSAK (BB Swiss Army Knife) but have had zero success on getting rid of these files. Another question while I am asking. Would deleting these files make any difference to the available free memory as reported through the Status. I am hovering around 27MB and want to increase it without deleting the apps I have loaded into the Bold.