Script not doing what it is supposed to do...

What is the problem in the code? It flashes successfully, but, I have noticed the the system is still mounted even though the script unmounts it...:confused:
Also, the folders which where meant to be deleted still remain...

I need help!:eek:

Code:

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ui_print(" ");
ui_print(" Debloating... ");
ui_print(" ");
run_program("/sbin/busybox", "mount", "/data");
run_program("/sbin/busybox", "mount", "/system");
run_program("/sbin/busybox", "mount", "/cache");
delete("/system/app/YouTube");
delete("/system/app/YouTubeKaraokePlugin");
delete("/system/app/YouTubePlugin");
run_program("/sbin/busybox", "unmount", "/data");
run_program("/sbin/busybox", "unmount", "/system");
run_program("/sbin/busybox", "unmount", "/cache");
ui_print(" ");
ui_print(" Done !!! ");
ui_print(" ");

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