remove dependencies on yedit and do not include that bundle anymore

eclipse-extensions/org.springframework.ide.eclipse.boot.dash/META-INF/MANIFEST.MF

@@ -28,7 +28,6 @@ Require-Bundle: org.eclipse.ui,
  org.eclipse.ui.views.properties.tabbed,
  org.eclipse.ui.editors,
  org.eclipse.jface.text,
- org.dadacoalition.yedit,
  org.eclipse.ui.workbench,
  org.yaml.snakeyaml,
  org.eclipse.compare,