Test Sonar apache#4

pom.xml

@@ -827,37 +827,6 @@
 				<version>3.6.0.1398</version>
 			</plugin>
 
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-checkstyle-plugin</artifactId>
-				<version>${maven-checkstyle-plugin.version}</version>
-				<dependencies>
-					<dependency>
-						<groupId>com.puppycrawl.tools</groupId>
-						<artifactId>checkstyle</artifactId>
-						<version>${puppycrawl.checkstyle.version}</version>
-					</dependency>
-				</dependencies>
-				<configuration>
-					<configLocation>buildtools/src/main/resources/bookkeeper/checkstyle.xml</configLocation>
-					<suppressionsLocation>buildtools/src/main/resources/bookkeeper/suppressions.xml</suppressionsLocation>
-					<encoding>UTF-8</encoding>
-					<consoleOutput>true</consoleOutput>
-					<failOnViolation>true</failOnViolation>
-					<includeResources>false</includeResources>
-					<includeTestSourceDirectory>true</includeTestSourceDirectory>
-				</configuration>
-				<executions>
-					<execution>
-						<id>checkstyle</id>
-						<phase>validate</phase>
-						<goals>
-							<goal>check</goal>
-						</goals>
-					</execution>
-				</executions>
-			</plugin>
-
 			<plugin>
 				<groupId>com.github.spotbugs</groupId>
 				<artifactId>spotbugs-maven-plugin</artifactId>