removed obsolete dependency to mwe2.language.ui

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

@@ -26,7 +26,6 @@ Require-Bundle: org.yakindu.sct.generator.genmodel;visibility:=reexport,
  org.yakindu.base.types;bundle-version="1.0.0",
  org.eclipse.help;bundle-version="3.5.100",
  org.yakindu.sct.doc.user;bundle-version="1.0.0",
- org.eclipse.emf.mwe2.language.ui;bundle-version="2.0.1",
  de.itemis.xtext.utils.jface;bundle-version="1.0.0",
  org.eclipse.xtext.xbase.lib;bundle-version="2.3.0"
 Import-Package: org.apache.commons.logging,