[pom] Remove enforcer skip flag as not needed

Author: hazendaz

mybatis-spring-boot-samples/pom.xml

@@ -42,6 +42,5 @@
   <properties>
     <module.name>org.mybatis.spring.sample</module.name>
     <maven.deploy.skip>true</maven.deploy.skip>
-    <enforcer.skip>true</enforcer.skip>
   </properties>
 </project>