removed irrelevant source folder

Signed-off-by: Kai Kreuzer <kai@openhab.org>

bundles/model/org.eclipse.smarthome.model.thing.tests/.classpath

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="src" path="xtend-gen"/>
 	<classpathentry kind="src" path="src"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.7"/>
 	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>

bundles/model/org.eclipse.smarthome.model.thing.tests/build.properties

@@ -1,5 +1,4 @@
-source.. = src/,\
-           xtend-gen/
+source.. = src/
 output.. = target/classes/
 bin.includes = META-INF/,\
        .