chore: Update release-please config files (#14770)

Update release-please config files

Author: yoshi-code-bot

.release-please-manifest.json

@@ -1,4 +1,3 @@
 {
-    "packages/google-cloud-bigquery-storage": "2.33.1",
-    "packages/google-cloud-dialogflow-cx": "2.0.0"
+    "packages/google-cloud-bigquery-storage": "2.33.1"
 }

release-please-config.json

@@ -42,27 +42,6 @@
                 }
             ],
             "release-type": "python"
-        },
-        "packages/google-cloud-dialogflow-cx": {
-            "bump-minor-pre-major": true,
-            "bump-patch-for-minor-pre-major": true,
-            "component": "google-cloud-dialogflow-cx",
-            "extra-files": [
-                "google/cloud/dialogflowcx/gapic_version.py",
-                "google/cloud/dialogflowcx_v3/gapic_version.py",
-                "google/cloud/dialogflowcx_v3beta1/gapic_version.py",
-                {
-                    "jsonpath": "$.clientLibrary.version",
-                    "path": "samples/generated_samples/snippet_metadata_google.cloud.dialogflow.cx.v3.json",
-                    "type": "json"
-                },
-                {
-                    "jsonpath": "$.clientLibrary.version",
-                    "path": "samples/generated_samples/snippet_metadata_google.cloud.dialogflow.cx.v3beta1.json",
-                    "type": "json"
-                }
-            ],
-            "release-type": "python"
         }
     }
 }