deploy: remove preStop hook from daemonset templates

The lifecycle preStop hook fails on container stop / exit
because /bin/sh is not present in the driver registrar container
image.

the driver-registrar will remove the socket file
before stopping. we dont need to have any preStop hook
to remove the socket as it was not working as expected

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

charts/ceph-csi-rbd/templates/nodeplugin-daemonset.yaml

@@ -45,18 +45,6 @@ spec:
             - "--v=5"
             - "--csi-address=/csi/{{ .Values.pluginSocketFile }}"
             - "--kubelet-registration-path={{ .Values.socketDir }}/{{ .Values.pluginSocketFile }}"
-          lifecycle:
-            preStop:
-              exec:
-                {{- /*
-                NOTE(wilmardo): The replace functions ensures there are no spaces in the string.
-                To avoid `rm -rf /registration/driver name`
-                */}}
-                command: [
-                  "/bin/sh", "-c",
-                  "rm -rf /registration/{{ .Values.driverName | replace " " "" }} \
-                  /registration/{{ .Values.driverName | replace " " "" }}-reg.sock"
-                ]
           env:
             - name: KUBE_NODE_NAME
               valueFrom: