storage: remove convert_to_f2fs.sh

No longer need this script.

Bug: 207031989
Test: boot to home, make sure all f2fs partitions are mounted
Signed-off-by: Randall Huang <huangrandall@google.com>
Change-Id: I882084fb3a7cf1771e146d7d950ee4a5106792fe
3 files changed