hikey960: flash-all.sh: Remove unintentionally committed skipping of userdata

I often test flash-all.sh with the line flashing userdata commented out
so I don't loose the environment on my device. But unfortunately it
seems I embarassingly committed this debug trick to the tree.

So remove the comment so that flash-all.sh properly flashes userdata.

Apologies to all!

Reported-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Change-Id: I1180292b0893b805fec5f200cc155605319894c7
1 file changed