Removed image-helper package

src/docs/asciidoc/wiki/atom_editor.adoc

@@ -19,7 +19,6 @@ Contributing to the Wiki is now easier than it ever has been. Using the Atom edi
 ** Add these packages:
 +
 *language-asciidoc* +
-*asciidoc-image-helper*  +
 *asciidoc-preview* +
 *autocomplete-asciidoc*  +