Revert "Prefix the find command with "nice -n 19" to further reduce load"

This reverts commit af947cf83f6a9f8f37c9cfafd600cfcde18d3571.
Revert "Prefix the big "find" command with "ionice -c 3" to reduce load on the server"

This reverts commit dcdb822fe42a962068adc5ed6cd4a27a6ea06f87.