Update sdk/monitor/azure-monitor-opentelemetry/azure/monitor/opentelemetry/_utils/configurations.py

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: rads-1996

sdk/monitor/azure-monitor-opentelemetry/azure/monitor/opentelemetry/_utils/configurations.py

@@ -131,7 +131,7 @@ def _default_sampling_ratio(configurations):
         except:
             pass
     else:
-        _logger.error("OTEL_TRACES_SAMPLER_ARG is not set.")
+        _logger.warning("OTEL_TRACES_SAMPLER_ARG is not set.")
 
     # Check if rate-limited sampler is configured
     if environ.get(OTEL_TRACES_SAMPLER) == RATE_LIMITED_SAMPLER: