Remove 2x bronze sponsors

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

BACKERS.md

@@ -76,14 +76,10 @@ Email [sales@openfaas.com](mailto:sales@openfaas.com) for a quote.
 
 <a href="https://garden.io"><img alt="Garden.io" src="https://www.openfaas.com/images/sponsors/garden.png" width="90px" /></a>
 
-<a href="https://www.contiamo.com"><img alt="Contiamo" src="https://docs.openfaas.com/images/logos/contiamo.svg" width="90px" /></a>
-
 <a href="https://www.form3.tech"><img alt="Form3 Tech" src="https://docs.openfaas.com/images/logos/form3.svg" width="90px" /></a>
 
 <a href="https://dragonchain.com"><img alt="Dragonchain" src="https://www.openfaas.com/images/users-logos/dragonchain.svg" width="90px" /></a>
 
-* [Brandon Lamb](https://github.com/brandonlamb)
-
 <a href="https://ratehub.ca"><img alt="ratehub.ca" src="https://www.ratehub.ca/images/logo-small-right.png" width="90px" /></a>
 
 ## Individual backers