review: separate setting up otel tracing infra

pageserver/src/bin/pageserver.rs

@@ -114,7 +114,6 @@ fn main() -> anyhow::Result<()> {
     logging::init(
         conf.log_format,
         tracing_error_layer_enablement,
-        utils::logging::OtelEnablement::Disabled,
         logging::Output::Stdout,
     )?;
 

pageserver/src/tenant.rs

@@ -5718,7 +5718,6 @@ pub(crate) mod harness {
                 // enable it in case the tests exercise code paths that use
                 // debug_assert_current_span_has_tenant_and_timeline_id
                 logging::TracingErrorLayerEnablement::EnableWithRustLogFilter,
-                utils::logging::OtelEnablement::Disabled,
                 logging::Output::Stdout,
             )
             .expect("Failed to init test logging");