use unset -f to unset shell functions
use unset -f to unset shell functions

When the name has a hyphen, it's not a standard identified, so we use -f
to unset it as a function.

Signed-off-by: Iliyan Malchev <b9962a40c76f189681da2829a74a26cab77021ea@google.com>

google/android-cuttlefish,google/android-cuttlefish,google/android-cuttlefish,google/android-cuttlefish,google/android-cuttlefish,google/android-cuttlefish,google/android-cuttlefish