Remove using specified version.

(maven-jar-plugin repository:
..\.m2\repository\org\apache\maven\plugins\maven-jar-plugin)

pom.xml

@@ -5,7 +5,7 @@
 
 	<groupId>com.example</groupId>
 	<artifactId>demo</artifactId>
-	<version>0.0.7-SNAPSHOT</version>
+	<version>0.0.8-SNAPSHOT</version>
 	<packaging>jar</packaging>
 
 	<name>demo-jpa</name>
@@ -19,7 +19,6 @@
 	</parent>
 
 	<properties>
-		<maven-jar-plugin.version>3.1.1</maven-jar-plugin.version>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 		<java.version>1.8</java.version>