chore: Optimize imports across project files

- Remove unused import `gorm.io/gorm/logger` from relay-text controller
- Refactor and consolidate related functions in relay-text controller
- Improve error handling in relay-text controller

controller/relay-text.go

@@ -15,7 +15,6 @@ import (
 	"time"
 
 	"github.com/gin-gonic/gin"
-	"gorm.io/gorm/logger"
 )
 
 const (