User surefire plugin config from Spring Cloud Build.

pom.xml

@@ -223,14 +223,6 @@
 							</execution>
 						</executions>
 					</plugin>
-					<plugin>
-						<groupId>org.apache.maven.plugins</groupId>
-						<artifactId>maven-surefire-plugin</artifactId>
-						<configuration>
-							<!-- Sets the VM argument line used when unit tests are run. -->
-							<argLine>${surefireArgLine}</argLine>
-						</configuration>
-					</plugin>
 				</plugins>
 			</build>
 		</profile>