Remove incorrect instruction of resetprop

[aviraxp]

This instruction is wrong because the prop doesn't exist when boot is not completed.

[aviraxp]

cc @yujincheng08

[yujincheng08]

I intentionally didnt write it in a while-loop for non-existent props, because not all the people like the sleep 1.

[vvb2060]

Why not use this?

while [ "$(getprop sys.boot_completed)" != "1" ]; do
  sleep 1
done

Does resetprop -w have any advantages over it? It is more compatible than resetprop -w