cpp-common/bt2c: Logger: remove `noThrow` suffixes

cpp-common/bt2c: Logger: remove `noThrow` suffixes

I think that the `noThrow` suffixes are unnecessary.  Since the methods
that throw (or rethrow) have the `AndThrow` (or `AndRethrow`) suffixes,
it is implied that those that don't, don't.

Simplify some macro comments to omit "without appending nor throwing",
for the same reason (if the macro name doesn't contain "APPEND_CAUSE",
it doesn't append a cause, if it doesn't contain "THROW", it doesn't
throw).

Change-Id: Ia71cf733e857e89578648eda12bf64b2bfc65027
Signed-off-by: Simon Marchi <simon.marchi@efficios.com>
Reviewed-on: https://review.lttng.org/c/babeltrace/+/12229
Reviewed-by: Philippe Proulx <eeppeliteloop@gmail.com>
Tested-by: jenkins <jenkins@lttng.org>