docs: remove v2beta3 (#2251)

Author: kayx23

docs/en/latest/FAQ.md

@@ -72,16 +72,6 @@ These CRDs are not templated but will be installed by default when running `helm
 
 :::
 
-## Why is there an error like "no matches for kind "ApisixRoute" in version "apisix.apache.org/v2beta3"" when I try to create a Route?
-
-Make sure that you have the correct version of the CRDs installed in your cluster (see [updating CRDs](#how-do-i-update-the-crds-when-updating-apisix-ingress-controller)). `ApisixRoute` has two versions: `v2beta3` and `v2`.
-
-Also check your `ApisixRoute` definition for the correct version by running:
-
-```shell
-kubectl get crd apisixroutes.apisix.apache.org -o jsonpath='{ .spec.versions[*].name }' -A
-```
-
 ## How do I modify the Admin API key in APISIX Ingress?
 
 You can change the Admin API key in two ways:

docs/en/latest/concepts/apisix_plugin_config.md

@@ -35,7 +35,7 @@ spec:
 You can then configure a Route to use the `echo-and-cors-apc` Plugin configuration:
 
 ```yaml
-apiVersion: apisix.apache.org/v2beta3
+apiVersion: apisix.apache.org/v2
 kind: ApisixRoute
 metadata:
   name: httpbin-route

docs/en/latest/config.json

@@ -49,15 +49,11 @@
       "type": "category",
       "label": "References",
       "items": [
-        "references/apisix_route_v2beta3",
         "references/apisix_route_v2",
         "references/apisix_upstream",
         "references/apisix_tls_v2",
-        "references/apisix_tls_v2beta3",
         "references/apisix_cluster_config_v2",
-        "references/apisix_cluster_config_v2beta3",
         "references/apisix_pluginconfig_v2",
-        "references/apisix_pluginconfig_v2beta3",
         "references/v2",
         "references/apisix_global_rule_v2"
       ]