refactor: remove unnecessary fields from PostDTO

Author: architxkumar

internal/model/post.go

@@ -19,8 +19,6 @@ type PostDTO struct {
 	Title   string `json:"title"`
 	Content string `json:"content"`
 	// length until 30
-	Category  string    `json:"category"`
-	Tags      []string  `json:"tags"`
-	CreatedAt time.Time `json:"created_at"`
-	UpdatedAt time.Time `json:"updated_at"`
+	Category string   `json:"category"`
+	Tags     []string `json:"tags"`
 }