Remove duplicated declare (#15)

Co-authored-by: pokers <[email protected]>

Author: pokers

src/controllers/index.js

@@ -3,11 +3,6 @@ const boardController = require("./boardController");
 const userController = require("./accountController");
 const adminController = require("./adminController");
 const bookTimerController = require("./bookTimerController");
-const healthcheckController = require('./healthcheckController')
-const boardController = require('./boardController')
-const userController = require('./accountController')
-const adminController = require('./adminController')
-const bookTimerController = require('./bookTimerController')
 const libraryController = require('./libraryController')
 const lastPageController = require("./lastPageController");
 const bookShelfController = require("./bookShelfController");