kata-deploy: Remove qemu-virtiofs runtime class

There's only one QEMU runtime class deployed as part of kata-deploy, and
that includes virtiofs support (which is the default for quite some time
already).  Knowing this, let's just remove the `qemu-virtiofs` runtime
class definition.

Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>

tools/packaging/kata-deploy/runtimeclasses/kata-runtimeClasses.yaml

@@ -1,19 +1,6 @@
 ---
 kind: RuntimeClass
 apiVersion: node.k8s.io/v1beta1
-metadata:
-    name: kata-qemu-virtiofs
-handler: kata-qemu-virtiofs
-overhead:
-    podFixed:
-        memory: "160Mi"
-        cpu: "250m"
-scheduling:
-  nodeSelector:
-    katacontainers.io/kata-runtime: "true"
----
-kind: RuntimeClass
-apiVersion: node.k8s.io/v1beta1
 metadata:
     name: kata-qemu
 handler: kata-qemu