Reorder imports

Author: Khepu

sdk/trace/src/main/java/io/opentelemetry/sdk/trace/export/BatchSpanProcessor.java

@@ -17,7 +17,6 @@
 import io.opentelemetry.sdk.trace.SpanProcessor;
 import io.opentelemetry.sdk.trace.data.SpanData;
 import io.opentelemetry.sdk.trace.internal.JcTools;
-import javax.annotation.Nullable;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -30,6 +29,7 @@
 import java.util.function.Supplier;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+import javax.annotation.Nullable;
 
 /**
  * Implementation of the {@link SpanProcessor} that batches spans exported by the SDK then pushes