qemu-build: Remove Australianism
qemu-build: Remove Australianism

I was using a local apt mirror for testing that was not intended to be
committed.

Signed-off-by: Joel Stanley <4816dabf8db1bc6cac35b3a24cab2ff844b5b0c7@jms.id.au>

openbmc/openbmc-build-scripts,openbmc/openbmc-build-scripts