Test: cts: Drop cts --trace-* commands

These commands list, add to, remove from, and set the list of traced
function in the Pacemaker sysconfig file on each node of the given
cluster/group. This could be helpful on rare occasions, but it isn't
necessary and I don't think we or anyone else ever uses this.

• There is no equivalent functionality for other trace settings (for example, trace files).
• The sed regexes are extremely hard to follow and potentially brittle.
• In practice, the dev team are likely the only people who use these tracing options.
• Usually when we enable tracing, we only need to do so on one node at a time.
• This seems to have nothing to do with CTS or with testing in general.

Signed-off-by: Reid Wahl <nrwahl@protonmail.com>