Remove broken link. Will create a record for the general problem of where we…

Remove broken link. Will create a record for the general problem of where we should point for edX101, help, pdf documentation, etc.
#213

cms/templates/import.html

@@ -19,7 +19,6 @@
   <div class="inner-wrapper">
     <article class="import-overview">
       <div class="description">
-        <h2>Please <a href="https://edge.edx.org/courses/edX/edx101/edX_Studio_Reference/about" target="_blank">read the documentation</a> before attempting an import!</h2>
         <p><strong>Importing a new course will delete all content currently associated with your course
         and replace it with the contents of the uploaded file.</strong></p>
         <p>File uploads must be gzipped tar files (.tar.gz or .tgz) containing, at a minimum, a <code>course.xml</code> file.</p>