Remove Open In Binder link from nb-badges.html

Removed the Open In Binder link from the badges template.

Author: koaning

_templates/nb-badges.html

@@ -14,9 +14,6 @@
     <a href="{{ github_url + '/' + gh_basepath + file_path }}", role="button" target="_blank">
     <img src="{{ pathto('_static/github.svg', 1) }}" alt="View On GitHub"></a>
 
-    <a href="{{ 'https://mybinder.org/v2/gh/' + sandbox_repo + '?urlpath=git-pull%3Frepo%3Dhttps%253A%252F%252Fgithub.com%252F' + encoded_base + '%26urlpath%3Dtree%252F' + github_repo + '%252F' + encoded_path + '%26branch%3D' + github_version }}" target="_blank">
-    <img src="{{ pathto('_static/binder.svg', 1) }}" alt="Open In Binder"></a>
-
     <a href="{{ 'https://colab.research.google.com/github/' + gh_basepath + file_path }}" target="_blank">
     <img src="{{ pathto('_static/colab.svg', 1) }}" alt="Open In Colab"/></a>