removed version in maven-war-plugin as it is inhertied from maven-parent

.classpath

@@ -38,7 +38,7 @@
 	<classpathentry kind="con" path="com.google.gwt.eclipse.core.GWT_CONTAINER"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
 		<attributes>
-			<attribute name="owner.project.facets" value="java"/>
+			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>
 	<classpathentry kind="output" path="target/about-vre-3.4.0-SNAPSHOT/WEB-INF/classes"/>

.project

@@ -41,17 +41,17 @@
 			</arguments>
 		</buildCommand>
 		<buildCommand>
-			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<name>com.gwtplugins.gdt.eclipse.core.webAppProjectValidator</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
 		<buildCommand>
-			<name>com.gwtplugins.gdt.eclipse.core.webAppProjectValidator</name>
+			<name>com.gwtplugins.gwt.eclipse.core.gwtProjectValidator</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
 		<buildCommand>
-			<name>com.gwtplugins.gwt.eclipse.core.gwtProjectValidator</name>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
 			<arguments>
 			</arguments>
 		</buildCommand>

pom.xml

@@ -168,7 +168,6 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-war-plugin</artifactId>
-				<version>2.1.1</version>
 				<executions>
 					<execution>
 						<phase>compile</phase>