Updated build.properties to resolve warnings for source build
diff --git a/examples/org.eclipse.graphiti.examples.tutorial/build.properties b/examples/org.eclipse.graphiti.examples.tutorial/build.properties
index 76aef3d..2d00877 100644
--- a/examples/org.eclipse.graphiti.examples.tutorial/build.properties
+++ b/examples/org.eclipse.graphiti.examples.tutorial/build.properties
@@ -21,9 +21,5 @@
                plugin.properties,\
                icons/,\
                about.html
-src.includes = src/,\
-               META-INF/,\
-               icons/,\
-               plugin.xml,\
-               plugin.properties,\
+src.includes = icons/,\
                about.html