我是idea生成的pom文件 这些是要删除吗

<modelVersion>4.0.0</modelVersion>

<groupId>com.fushan</groupId>
<artifactId>o2o</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>

<name>o2o Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>

<properties>
 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 <maven.compiler.source>1.7</maven.compiler.source>
 <maven.compiler.target>1.7</maven.compiler.target>
</properties>

<dependencies>
 <dependency>
   <groupId>junit</groupId>
   <artifactId>junit</artifactId>
   <version>4.11</version>
   <scope>test</scope>
 </dependency>
</dependencies>

<build>
 <finalName>o2o</finalName>
 <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
   <plugins>
     <plugin>
       <artifactId>maven-clean-plugin</artifactId>
       <version>3.1.0</version>
     </plugin>
     <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
     <plugin>
       <artifactId>maven-resources-plugin</artifactId>
       <version>3.0.2</version>
     </plugin>
     <plugin>
       <artifactId>maven-compiler-plugin</artifactId>
       <version>3.8.0</version>
     </plugin>
     <plugin>
       <artifactId>maven-surefire-plugin</artifactId>
       <version>2.22.1</version>
     </plugin>
     <plugin>
       <artifactId>maven-war-plugin</artifactId>
       <version>3.2.2</version>
     </plugin>
     <plugin>
       <artifactId>maven-install-plugin</artifactId>
       <version>2.5.2</version>
     </plugin>
     <plugin>
       <artifactId>maven-deploy-plugin</artifactId>
       <version>2.8.2</version>
     </plugin>
   </plugins>
 </pluginManagement>
</build>