Update pom.xml

1.删除pom 多余properties模块

pom.xml

@@ -4,12 +4,6 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
-        <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>
-    </properties>
 
     <groupId>org.itstack</groupId>
     <artifactId>itstack-demo-design</artifactId>
@@ -112,4 +106,4 @@
         </dependency>
     </dependencies>
 
-</project>
\ No newline at end of file
+</project>