Format and fix tests

Author: yalimu-g

spark-bigquery-connector-common/src/test/java/com/google/cloud/spark/bigquery/integration/ReadByFormatIntegrationTestBase.java

@@ -268,7 +268,9 @@ public void testConvertBigQueryMapToSparkMap() throws Exception {
                                 "map_field",
                                 LegacySQLTypeName.RECORD,
                                 FieldList.of(
-                                    Field.of("key", LegacySQLTypeName.STRING),
+                                    Field.newBuilder("key", LegacySQLTypeName.STRING)
+                                        .setMode(Field.Mode.REQUIRED)
+                                        .build(),
                                     Field.of("value", LegacySQLTypeName.INTEGER)))
                             .setMode(Field.Mode.REPEATED)
                             .build())))

spark-bigquery-dsv2/spark-4.0-bigquery/src/test/java/com/google/cloud/spark/bigquery/integration/Spark40ReadByFormatIntegrationTest.java

@@ -16,7 +16,6 @@
 package com.google.cloud.spark.bigquery.integration;
 
 import org.apache.spark.sql.types.DataTypes;
-import org.junit.Test;
 
 public class Spark40ReadByFormatIntegrationTest extends ReadByFormatIntegrationTestBase {