Remove redundant div from rich text block (#174)

Fixes issue #164

coderedcms/templates/coderedcms/blocks/rich_text_block.html

@@ -1,4 +1,3 @@
-{% extends 'coderedcms/blocks/base_block.html' %}
 {% load wagtailcore_tags coderedcms_tags %}
 
 {% block block_render %}