Don't use a parent POM for plugin integration tests

For integration test projects executed using maven-invoker-plugin, using
the same parent POM as the main project results in unintended plugin
executions during test runs.
diff --git a/maven/wsdl2java-maven-plugin/src/it/writeStubToTestSources/pom.xml b/maven/wsdl2java-maven-plugin/src/it/writeStubToTestSources/pom.xml
index eee18bb..df7d538 100644
--- a/maven/wsdl2java-maven-plugin/src/it/writeStubToTestSources/pom.xml
+++ b/maven/wsdl2java-maven-plugin/src/it/writeStubToTestSources/pom.xml
@@ -19,11 +19,6 @@
   -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <parent>
-        <groupId>@project.groupId@</groupId>
-        <artifactId>axis-project</artifactId>
-        <version>@project.version@</version>
-    </parent>
     <groupId>test</groupId>
     <artifactId>writeStubToTestSources</artifactId>
     <version>1</version>
diff --git a/maven/wsdl2java-maven-plugin/src/it/wsrf/pom.xml b/maven/wsdl2java-maven-plugin/src/it/wsrf/pom.xml
index 6630ce5..ce36d32 100644
--- a/maven/wsdl2java-maven-plugin/src/it/wsrf/pom.xml
+++ b/maven/wsdl2java-maven-plugin/src/it/wsrf/pom.xml
@@ -19,11 +19,6 @@
   -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <parent>
-        <groupId>@project.groupId@</groupId>
-        <artifactId>axis-project</artifactId>
-        <version>@project.version@</version>
-    </parent>
     <groupId>test</groupId>
     <artifactId>wsrf</artifactId>
     <version>1</version>