removed MANIFESt.MF from example projects

examples/org.yakindu.sct.ui.examples/META-INF/MANIFEST.MF

@@ -6,9 +6,6 @@ Bundle-Version: 2.5.0.qualifier
 Bundle-Activator: org.yakindu.sct.ui.examples.Activator
 Bundle-Vendor: statecharts.org
 Require-Bundle: org.eclipse.core.runtime,
- org.eclipse.emf.common.ui;bundle-version="2.7.0",
- org.yakindu.sct.examples.trafficlight;bundle-version="2.5.0",
- org.yakindu.sct.examples.clock;bundle-version="2.5.0",
- org.yakindu.sct.examples.lightswitch;bundle-version="2.5.0"
+ org.eclipse.emf.common.ui;bundle-version="2.7.0"
 Bundle-RequiredExecutionEnvironment: JavaSE-1.6
 Bundle-ActivationPolicy: lazy