formatting, remove unneeded dependency

persistence-modules/spring-data-mongodb/pom.xml

@@ -24,14 +24,6 @@
             <artifactId>mongodb-driver-sync</artifactId>
             <version>${mongodb-driver.version}</version>
         </dependency>
-        
-
-        <dependency>
-            <groupId>org.springframework.data</groupId>
-            <artifactId>spring-data-releasetrain</artifactId>
-            <version>${spring-releasetrain}</version>
-            <type>pom</type>
-        </dependency>
 
         <dependency>
             <groupId>org.mongodb</groupId>
@@ -114,7 +106,6 @@
         <mysema.maven.version>1.1.3</mysema.maven.version>
         <mongodb-reactivestreams.version>4.1.0</mongodb-reactivestreams.version>
         <projectreactor.version>3.2.0.RELEASE</projectreactor.version>
-        <spring-releasetrain>Lovelace-SR9</spring-releasetrain>
         <mongodb-driver.version>4.0.5</mongodb-driver.version>
     </properties>
 

persistence-modules/spring-data-mongodb/src/main/java/com/baeldung/config/MongoConfig.java

@@ -81,7 +81,7 @@ public class MongoConfig extends AbstractMongoClientConfiguration {
 
     @Bean
     MongoTransactionManager transactionManager(MongoDatabaseFactory dbFactory) {
-            return new MongoTransactionManager(dbFactory);
+        return new MongoTransactionManager(dbFactory);
     }
 
 }

persistence-modules/spring-data-mongodb/src/test/java/com/baeldung/transaction/MongoTransactionalLiveTest.java

@@ -2,7 +2,6 @@ package com.baeldung.transaction;
 
 import static org.hamcrest.CoreMatchers.is;
 import static org.junit.Assert.assertThat;
-import static org.junit.Assert.assertTrue;
 
 import java.util.List;
 
@@ -22,7 +21,6 @@ import org.springframework.transaction.annotation.Transactional;
 import com.baeldung.config.MongoConfig;
 import com.baeldung.model.User;
 import com.baeldung.repository.UserRepository;
-import com.mongodb.MongoCommandException;
 
 /**
  *