Go: remove unused API route (#14028)

### What problem does this PR solve?

As title

### Type of change

- [x] Refactoring

---------

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

api/apps/restful_apis/config_api.py

@@ -1,71 +0,0 @@
-#
-#  Copyright 2026 The InfiniFlow Authors. All Rights Reserved.
-#
-#  Licensed under the Apache License, Version 2.0 (the "License");
-#  you may not use this file except in compliance with the License.
-#  You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-#  Unless required by applicable law or agreed to in writing, software
-#  distributed under the License is distributed on an "AS IS" BASIS,
-#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-#  See the License for the specific language governing permissions and
-#  limitations under the License.
-#
-
-from api.apps import login_required
-from api.utils.api_utils import get_json_result, get_data_error_result
-from common.log_utils import get_log_levels, set_log_level
-
-@manager.route("/config/log", methods=["GET"])  # noqa: F821
-@login_required
-async def get_logger_levels():
-    """
-    Get current log levels for all packages.
-    ---
-    tags:
-        - System
-    responses:
-        200:
-            description: Return current log levels
-    """
-    return get_json_result(data=get_log_levels())
-
-
-@manager.route("/config/log", methods=["PUT"])  # noqa: F821
-@login_required
-async def set_logger_level():
-    """
-    Set log level for a package.
-    ---
-    tags:
-        - System
-    parameters:
-        - in: body
-          name: body
-          required: true
-          schema:
-            type: object
-            properties:
-                pkg_name:
-                    type: string
-                    description: Package name (e.g., "rag.utils.es_conn")
-                level:
-                    type: string
-                    description: Log level (DEBUG, INFO, WARNING, ERROR)
-    responses:
-        200:
-            description: Log level updated successfully
-    """
-    from quart import request
-    data = await request.get_json()
-    if not data or "pkg_name" not in data or "level" not in data:
-        return get_data_error_result(message="pkg_name and level are required")
-    pkg_name = data["pkg_name"]
-    level = data["level"]
-    success = set_log_level(pkg_name, level)
-    if success:
-        return get_json_result(data={"pkg_name": pkg_name, "level": level})
-    else:
-        return get_data_error_result(message=f"Invalid log level: {level}")

api/apps/restful_apis/system_api.py

@@ -25,6 +25,7 @@ from common.time_utils import current_timestamp, datetime_format
 from api.db.db_models import APIToken
 from api.db.services.api_service import APITokenService
 from api.db.services.user_service import UserTenantService
+from common.log_utils import get_log_levels, set_log_level
 
 @manager.route("/system/ping", methods=["GET"])  # noqa: F821
 async def ping():
@@ -190,4 +191,57 @@ def rm(token):
         APITokenService.filter_delete([APIToken.tenant_id == tenant_id, APIToken.token == token])
         return get_json_result(data=True)
     except Exception as e:
-        return server_error_response(e)
+        return server_error_response(e)
+
+
+@manager.route("/system/config/log", methods=["GET"])  # noqa: F821
+@login_required
+async def get_logger_levels():
+    """
+    Get current log levels for all packages.
+    ---
+    tags:
+        - System
+    responses:
+        200:
+            description: Return current log levels
+    """
+    return get_json_result(data=get_log_levels())
+
+
+@manager.route("/system/config/log", methods=["PUT"])  # noqa: F821
+@login_required
+async def set_logger_level():
+    """
+    Set log level for a package.
+    ---
+    tags:
+        - System
+    parameters:
+        - in: body
+          name: body
+          required: true
+          schema:
+            type: object
+            properties:
+                pkg_name:
+                    type: string
+                    description: Package name (e.g., "rag.utils.es_conn")
+                level:
+                    type: string
+                    description: Log level (DEBUG, INFO, WARNING, ERROR)
+    responses:
+        200:
+            description: Log level updated successfully
+    """
+    from quart import request
+    data = await request.get_json()
+    if not data or "pkg_name" not in data or "level" not in data:
+        return get_data_error_result(message="pkg_name and level are required")
+    pkg_name = data["pkg_name"]
+    level = data["level"]
+    success = set_log_level(pkg_name, level)
+    if success:
+        return get_json_result(data={"pkg_name": pkg_name, "level": level})
+    else:
+        return get_data_error_result(message=f"Invalid log level: {level}")