Is it possible to remove/uninstall Quicktime Player 7?
OS X seems to allow just moving it to the trash, which is probably the recommended way to remove it.

If you use an application like AppCleaner, check that it doesn't actually try to delete files for the new QuickTime Player:



The bundle identifiers of the old and new version are com.apple.QuickTimePlayer and com.apple.QuickTimePlayerX. The only files it found for the old version were:


/Applications/Utilities/QuickTime Player 7.app/
~/Library/Preferences/com.apple.quicktimeplayer.plist
~/Library/Preferences/com.apple.quicktimeplayer.plist.lockfile
~/Library/Caches/com.apple.helpd/Generated/com.apple.QuickTimePlayer.help/