Fix(chat-id): Handling unregistered chat ID

backend/docs/swagger.yaml

@@ -1,26 +1,4 @@
 basePath: /
-definitions:
-  common.ErrResponse:
-    properties:
-      code:
-        description: application-specific error code
-        type: integer
-      error:
-        description: application-level error message, for debugging
-        type: string
-      status:
-        description: user-level status message
-        type: string
-    type: object
-  common.TextResponse:
-    properties:
-      status:
-        description: user-level status message
-        type: string
-      text:
-        description: application-specific error code
-        type: string
-    type: object
 info:
   contact:
     name: Samuel Pua
@@ -48,29 +26,4 @@ paths:
       summary: This is test
       tags:
       - Base
-  /webhook/routes/{webhookID}:
-    post:
-      consumes:
-      - application/json
-      description: Description
-      parameters:
-      - description: Pre-registered Webhook Path
-        in: path
-        name: webhookID
-        required: true
-        type: string
-      produces:
-      - application/json
-      responses:
-        "200":
-          description: OK
-          schema:
-            $ref: '#/definitions/common.TextResponse'
-        "500":
-          description: Internal Server Error
-          schema:
-            $ref: '#/definitions/common.ErrResponse'
-      summary: Pre-generated webhooks
-      tags:
-      - Webhook
 swagger: "2.0"