Yes, you can hide the playback rate in the 5centsCDN video player by adding the query parameter hideplaybackrate=true at the end of the playback URL. A sample iframe code is attached below.
<div style="width: 100%; height: 100%;"><iframe style="overflow: hidden; overflow-x: hidden; overflow-y: hidden; height: 100%; width: 100%; position: absolute; top: 0px; left: 0px; right: 0px; bottom: 0px;" src="base64_encoded_url?showcv=true&title=sample/test&hideplaybackrate=true" frameborder="0" allowfullscreen="allowfullscreen"></iframe></div>