Migrated to Xtext 2.3.0 and Eclipse 3.8

plugins/org.yakindu.sct.generator.c/META-INF/MANIFEST.MF

@@ -15,7 +15,6 @@ Require-Bundle: org.yakindu.sct.model.sexec,
  org.eclipse.emf.ecore.xmi,
  org.eclipse.jface.text,
  org.eclipse.xpand,
- org.eclipse.xtend,
  org.eclipse.xtend.typesystem.emf,
  org.yakindu.sct.model.stext,
  org.yakindu.sct.generator.core;bundle-version="1.0.0",