reduce diag.info when values are not required

[codefromthecrypt]

Is your feature request related to a problem? Please describe.

Right now, when I use the default exporter, for logs traces and metrics, I get a couple console statements from diag.info

OTEL_LOGS_EXPORTER is empty. Using default otlp exporter.
OTEL_TRACES_EXPORTER is empty. Using default otlp exporter.

It is frustrating to have to see this as it discourages using defaults. You might try to do something else just to get rid of the output.

Describe the solution you'd like

I would like to not see things in console output about using defaults, and not have to adjust diag settings to do so.

Describe alternatives you've considered

there are also some glitches trying to set the level from info to warning to avoid the same. Looks like this:

Current logger will be overwritten from Error
--snip
Current logger will overwrite one already registered from Error
--snip

Additional context

related issue about undesired output when attempting to change the diag level to warning #4447

[pichlermarc]

Hi - yep i think we should not use info in that case.
Let's change it to debug - @codefromthecrypt would that solve the issue?