Remove extern crate (#5922)

* Remove extern crate

common/logging/src/lib.rs

@@ -1,6 +1,4 @@
-#[macro_use]
-extern crate lazy_static;
-
+use lazy_static::lazy_static;
 use lighthouse_metrics::{
     inc_counter, try_create_int_counter, IntCounter, Result as MetricsResult,
 };

common/logging/src/tracing_metrics_layer.rs

@@ -1,5 +1,6 @@
 //! Exposes [`MetricsLayer`]: A tracing layer that registers metrics of logging events.
 
+use lazy_static::lazy_static;
 use lighthouse_metrics as metrics;
 use tracing_log::NormalizeEvent;