[ci] Remove deprecated OpenOCD arg from package installer
[ci] Remove deprecated OpenOCD arg from package installer

This commit causes ci/install-package-dependencies.sh to fail when it
receives --openocd-version.

Now that private CI is no longer specifying the --openocd-version flag,
we should stop ignoring the flag.

Signed-off-by: Dan McArdle <8fb240f11ec935676fcfd8aed04f42f9ee63efa8@google.com>

lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan