(DOCSP-11410): Removed blog guidelines (#41)

Author: melissamahoney-mongodb

source/style-guide.txt

@@ -70,7 +70,6 @@ MongoDB external and internal customers.
       /style-guide/terminology/index
       /style-guide/screenshots/index
       /style-guide/how-to-article-guidelines
-      /style-guide/blog-guidelines
       /style-guide/error-message-guidelines
       /style-guide/release-notes-guidelines
       /style-guide/revision-history