chore(apis): unpublish deprecated /v1/inference apis (#3297)

# What does this PR do?

unpublish (make unavailable to users) the following apis -
 - `/v1/inference/completion`, replaced by `/v1/openai/v1/completions`
- `/v1/inference/chat-completion`, replaced by
`/v1/openai/v1/chat/completions`
 - `/v1/inference/embeddings`, replaced by `/v1/openai/v1/embeddings`
 - `/v1/inference/batch-completion`, replaced by `/v1/openai/v1/batches`
- `/v1/inference/batch-chat-completion`, replaced by
`/v1/openai/v1/batches`

note: the implementations are still available for internal use, e.g.
agents uses chat-completion.

tests/integration/recordings/responses/c8e196049fe4.json

@@ -0,0 +1,47 @@
+{
+  "request": {
+    "method": "POST",
+    "url": "http://0.0.0.0:11434/v1/v1/completions",
+    "headers": {},
+    "body": {
+      "model": "llama3.2:3b-instruct-fp16",
+      "prompt": "Return the exact same sentence and don't add additional words): Michael Jordan was born in the year of 1963",
+      "stop": [
+        "blathering",
+        "1963"
+      ],
+      "stream": false,
+      "extra_body": {}
+    },
+    "endpoint": "/v1/completions",
+    "model": "llama3.2:3b-instruct-fp16"
+  },
+  "response": {
+    "body": {
+      "__type__": "openai.types.completion.Completion",
+      "__data__": {
+        "id": "cmpl-381",
+        "choices": [
+          {
+            "finish_reason": "stop",
+            "index": 0,
+            "logprobs": null,
+            "text": "Michael Jordan was born in the year of "
+          }
+        ],
+        "created": 1758978056,
+        "model": "llama3.2:3b-instruct-fp16",
+        "object": "text_completion",
+        "system_fingerprint": "fp_ollama",
+        "usage": {
+          "completion_tokens": 11,
+          "prompt_tokens": 48,
+          "total_tokens": 59,
+          "completion_tokens_details": null,
+          "prompt_tokens_details": null
+        }
+      }
+    },
+    "is_streaming": false
+  }
+}