Remove Artur Souza as maintainer

Signed-off-by: Marc Duiker <[email protected]>

Author: marcduiker

MAINTAINERS.md

@@ -3,7 +3,6 @@
 This is the list of maintainers for all Dapr repositories, in alphabetical order:
 
 - Artur Ciocanu (Adobe Inc) [@artur-ciocanu](https://github.com/artur-ciocanu)
-- Artur Souza (Diagrid) [@artursouza](https://github.com/artursouza)
 - Bernd Verst (Microsoft) [@berndverst](https://github.com/berndverst)
 - Cassie Coyle (Diagrid) [@cicoyle](https://github.com/cicoyle)
 - Cecil Phillip (Stripe) [@cecilphillip](https://github.com/cecilphillip) (non voting)