[cherry-pick] Removed note mentioning R33 from NIC RNs. (#6624)

Removed note mentioning R33 from NIC RNs. (#6623)

Co-authored-by: Travis Martin <[email protected]>

site/content/releases.md

@@ -16,14 +16,6 @@ We recommend against:
 2. Building new custom FIPS images.
 {{< /note >}}
 
-{{< note >}}
-For users who build images of NGINX Ingress Controller.
-On October 29th, NGINX Plus R33 will be released.
-This release of NGINX Plus will bring a **breaking** change.
-As a result, version `3.7.0` and earlier of NGINX Ingress Controller will not be compatible with NGINX Plus R33 and later.
-In our next major release, `v4.0.0`, NGINX Ingress Controller will bring compatibility with NGINX R33.
-{{< /note >}}
-
 {{< note >}}
 In our next major release, `v4.0.0`, the default log library for NGINX Ingress Controller will be changed from `golang/glog` to `log/slog`.
 This will mean that logs generated by NGINX Ingress Controller will be in a structured format with the option to choose a `string` or `json` output.