[Q] removing stock apps correctly (busybox and terminal emulator) topic

Alright, so checking up the system folder with root explorer I noticed that there are several applications related to the stock music player.
I can't just simply remove these "apks", right? Pretty certain there'd be leftovers of this app somewhere.
So, I realize, there's no "uninstall" script for the music app, but I was wondering, what is the most correct way to delete music application?
Simple doing this won't cut it, right?

Code:

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su
cd system/app
mount -o rw,remount /system
rm -r MusicCommonUtility
rm -rMusicLiveShare2.apk
rm -rMusicPlayerWT.apk
mount -o remount,ro /system

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