Fix linting issue with use statement

Author: geoff-imdex

rclrs/src/logging.rs

@@ -3,9 +3,7 @@
 // Adapted from https://github.com/sequenceplanner/r2r/blob/89cec03d07a1496a225751159cbc7bfb529d9dd1/r2r/src/utils.rs
 // Further adapted from https://github.com/mvukov/rules_ros2/pull/371
 
-use std::ffi::CString;
-use std::sync::Mutex;
-use std::time::Duration;
+use std::{ffi::CString, sync::Mutex, time::Duration};
 
 use crate::rcl_bindings::*;