remove unused variable

Author: lacinoire

src/test/java/com/github/maven_nar/cpptasks/compiler/TestLinkType.java

@@ -68,8 +68,6 @@ public void testIsPluginTrue() {
   public void testSetOutputType() throws Exception {
     try {
       final LinkType type = new LinkType();
-      final OutputTypeEnum pluginType = new OutputTypeEnum();
-      pluginType.setValue("executable");
       type.setOutputType(null);
       TestCase.fail("testSetOutputType should have thrown IllegalArgumentException");
     } catch (IllegalArgumentException expected) {