clean variables "null" in file variables.csv

[revealspectrum]

I think it would be interesting to delete variables with the value "null" the files "variables.csv" to save data bytes when using the command "/ skript reload all" or when the server is restarted.

For my part, I try to make maximum use of local variables.

[GrassyMoss]

You opened this same issue three times, so I suggest closing two of them to keep the issue system free of duplicates or spam.

[joeuguce99]

Done