docs: update ImagePolicy API documentation

Remove deprecated status field sections and update kubectl output example
to match new printer columns format that displays Image, Tag, Ready,
Status, and Age columns instead of the deprecated LatestImage column.

Signed-off-by: cappyzawa <[email protected]>

Author: cappyzawa

docs/spec/v1beta2/imagepolicies.md

@@ -52,12 +52,12 @@ kubectl apply -f imagepolicy.yaml
 2. Run `kubectl get imagepolicy` to see the ImagePolicy:
 
 ```console
-NAME      LATESTIMAGE
-podinfo   ghcr.io/stefanprodan/podinfo:5.1.4
+NAME      IMAGE                          TAG     READY   STATUS                                                                  AGE
+podinfo   ghcr.io/stefanprodan/podinfo   5.1.4   True    Latest image tag for 'ghcr.io/stefanprodan/podinfo' resolved to 5.1.4   5m
 ```
 
-3. Run `kubectl describe imagepolicy podinfo` to see the [Latest Image](#latest-image)
-and [Conditions](#conditions) in the ImagePolicy's Status:
+3. Run `kubectl describe imagepolicy podinfo` to see the [Latest Ref](#latest-ref)
+   and [Conditions](#conditions) in the ImagePolicy's Status:
 
 ```console
 Status:
@@ -68,7 +68,6 @@ Status:
     Reason:                Succeeded
     Status:                True
     Type:                  Ready
-  Latest Image:            ghcr.io/stefanprodan/podinfo:5.1.4
   Latest Ref:
     Digest:                 sha256:2d9a00b3981628a533ff43352193b1838b0a4bf6b0033444286f563205e51a2c
     Image:                  ghcr.io/stefanprodan/podinfo
@@ -356,49 +355,6 @@ specific ImagePolicy, e.g.
 
 ## ImagePolicy Status
 
-### Latest Image
-
-**Warning:** This field is deprecated in favor of `.status.latestRef.image` and will be
-removed in a future release.
-
-The ImagePolicy reports the latest select image from the ImageRepository tags in
-`.status.latestImage` for the resource.
-
-Example:
-
-```yaml
----
-apiVersion: image.toolkit.fluxcd.io/v1beta2
-kind: ImagePolicy
-metadata:
-  name: <policy-name>
-status:
-  latestImage: ghcr.io/stefanprodan/podinfo:5.1.4
-```
-
-### Observed Previous Image
-
-**Warning:** This field is deprecated in favor of `.status.observedPreviousRef.image`
-and will be removed in a future release.
-
-The ImagePolicy reports the previously observed latest image in
-`.status.observedPreviousImage` for the resource. This is used by the
-ImagePolicy to determine an upgrade path of an ImagePolicy update. This field
-is reset when the ImagePolicy fails due to some reason to be able to distinguish
-between a failure recovery and a genuine latest image upgrade.
-
-Example:
-
-```yaml
-apiVersion: image.toolkit.fluxcd.io/v1beta2
-kind: ImagePolicy
-metadata:
-  name: <policy-name>
-status:
-  latestImage: ghcr.io/stefanprodan/podinfo:6.2.1
-  observedPreviousImage: ghcr.io/stefanprodan/podinfo:5.1.4
-```
-
 ### Latest Ref
 
 The ImagePolicy reports the latest selected image from the ImageRepository tags in