chore: Fix lint issues

Author: lqiu96

google-cloud-bigquerystorage/src/test/java/com/google/cloud/bigquery/storage/v1/it/ITBigQueryStorageWriteClientTest.java

@@ -59,7 +59,6 @@
 import java.io.IOException;
 import java.math.BigDecimal;
 import java.nio.channels.Channels;
-import java.nio.charset.StandardCharsets;
 import java.sql.Timestamp;
 import java.text.ParseException;
 import java.time.Duration;
@@ -2366,7 +2365,8 @@ public void timestamp_arrowWrite() throws IOException {
   }
 
   @Test
-  public void timestamp_protobufWrite() throws IOException, DescriptorValidationException, InterruptedException {
+  public void timestamp_protobufWrite()
+      throws IOException, DescriptorValidationException, InterruptedException {
     String timestampFieldName = "timestamp";
     String timestampHigherPrecisionFieldName = "timestampHigherPrecision";
     com.google.cloud.bigquery.Schema bqTableSchema =

google-cloud-bigquerystorage/src/test/java/com/google/cloud/bigquery/storage/v1/it/util/Helper.java

@@ -59,7 +59,6 @@ public class Helper {
         {165846896123456L /* 1975-04-04T12:34:56.123456Z */, "1975-04-04T12:34:56.123456789123Z"}
       };
 
-  
   public static final Object[][] INPUT_ARROW_WRITE_TIMESTAMPS =
       new Object[][] {
         {1735734896123456L /* 2025-01-01T12:34:56.123456Z */, 1735734896123456789L},