Revert "largefile: do rand_write 64 times, to make things interesting"
Revert "largefile: do rand_write 64 times, to make things interesting"

This reverts commit 15b7b25db0f93c741e1323b445224471ae30bd6c.

mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl