🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Author: gcf-owl-bot[bot]

google-cloud-spanner/src/main/java/com/google/cloud/spanner/CompositeTracer.java

@@ -16,6 +16,8 @@
 
 package com.google.cloud.spanner;
 
+import static com.google.api.gax.util.TimeConversionUtils.toJavaTimeDuration;
+
 import com.google.api.core.InternalApi;
 import com.google.api.gax.tracing.ApiTracer;
 import com.google.api.gax.tracing.BaseApiTracer;
@@ -24,8 +26,6 @@
 import java.util.ArrayList;
 import java.util.List;
 
-import static com.google.api.gax.util.TimeConversionUtils.toJavaTimeDuration;
-
 @InternalApi
 public class CompositeTracer extends BaseApiTracer {
  private final List<ApiTracer> children;