Revert "Merge pull request #197 from zendesk/sdavidovitz/dynamic_content"

This reverts commit 6d6468cc3b2277336071a2e781b4ef256b1205ba, reversing
changes made to d78ed19ffbf565422da50b6f2d9550cbc98799bd.
v1.4.4
Merge pull request #197 from zendesk/sdavidovitz/dynamic_content

Add the dynamic content API
v1.4.5