ci: client: Do not run on Raspberry Pi

Removing the toleration for the `du5t1n.me/machine=raspberrypi` taint
will force the pod to be scheduled on a dynamic node in AWS.  This will
hopefully speed up builds, even considering the startup delay.

ci/clientPodTemplate.yaml

@@ -11,9 +11,6 @@ spec:
       name: ssh-known-hosts
       subPath: ssh_known_hosts
   hostUsers: false
-  tolerations:
-  - key: du5t1n.me/machine
-    value: raspberrypi
   volumes:
   - name: ssh-known-hosts
     configMap: