Bluetooth: Use sudo for package install and remove unused variable

Use sudo for apt-get while installing sshpass, and remove the unused
ROO_PASSWD variable as it passed down as $2

BUG=b:182800461
TEST=sh raspberrypi_setup 100.100.100.100 test0000

Change-Id: I458e158fa5b2e40695d4873234095316c67d89dc
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/chameleon/+/2774259
Tested-by: Michael Sun <michaelfsun@google.com>
Auto-Submit: Michael Sun <michaelfsun@google.com>
Commit-Queue: Daniel Winkler <danielwinkler@google.com>
Reviewed-by: Manish Mandlik <mmandlik@chromium.org>
Reviewed-by: Daniel Winkler <danielwinkler@google.com>
1 file changed