delete redundant example

The example does not offer other aspects about the hostPath, it's some kind of duplicate to the preceding one. So, maybe only the preceding one is enough.

docs/concepts/storage/volumes.md

@@ -171,26 +171,6 @@ spec:
       path: /data
 ```
 
-#### Example pod
-
-```yaml
-apiVersion: v1
-kind: Pod
-metadata:
-  name: test-hostpath
-spec:
-  containers:
-  - image: myimage
-    name: test-container
-    volumeMounts:
-    - mountPath: /test-hostpath
-      name: test-volume
-  volumes:
-  - name: test-volume
-    hostPath:
-      path: /path/to/my/dir
-```
-
 ### gcePersistentDisk
 
 A `gcePersistentDisk` volume mounts a Google Compute Engine (GCE) [Persistent