Removed unused variable

Seems like $MY_VAR isn't used anywhere.

Author: bertinatto

deploy/kubernetes/deployment.yaml

@@ -25,10 +25,6 @@ spec:
             - "--csi-address=$(ADDRESS)"
             - "--leader-election"
           env:
-            - name: MY_NAME
-              valueFrom:
-                fieldRef:
-                  fieldPath: metadata.name
             - name: ADDRESS
               value: /var/lib/csi/sockets/pluginproxy/mock.socket
           imagePullPolicy: "IfNotPresent"