GlusterFS: Remove extraneous line from glusterblock template

Signed-off-by: Jose A. Rivera <jarrpa@redhat.com>

roles/openshift_storage_glusterfs/files/v3.7/glusterblock-provisioner.yml

@@ -83,7 +83,6 @@ objects:
         containers:
         - name: glusterblock-provisioner
           image: ${IMAGE_NAME}:${IMAGE_VERSION}
-          image: gluster/glusterblock-provisioner:latest
           imagePullPolicy: IfNotPresent
           env:
           - name: PROVISIONER_NAME

roles/openshift_storage_glusterfs/files/v3.8/glusterblock-provisioner.yml

@@ -83,7 +83,6 @@ objects:
         containers:
         - name: glusterblock-provisioner
           image: ${IMAGE_NAME}:${IMAGE_VERSION}
-          image: gluster/glusterblock-provisioner:latest
           imagePullPolicy: IfNotPresent
           env:
           - name: PROVISIONER_NAME