Remove plugins that got into wrong pom

Author: AB-xdev

vaadin-addon-template-demo/pom.xml

@@ -93,19 +93,6 @@
 		<finalName>${project.artifactId}</finalName>
 
 		<pluginManagement>
-			<plugins>
-				<plugin>
-					<groupId>org.apache.maven.plugins</groupId>
-					<artifactId>maven-site-plugin</artifactId>
-					<version>4.0.0-M13</version>
-				</plugin>
-				<plugin>
-					<groupId>org.apache.maven.plugins</groupId>
-					<artifactId>maven-project-info-reports-plugin</artifactId>
-					<version>3.5.0</version>
-				</plugin>
-			</plugins>
-
 			<plugins>
 				<plugin>
 					<groupId>org.springframework.boot</groupId>