Update of 15.3

Updated 1 line

rustbook-uz/src/ch15-03-drop.md

@@ -1,9 +1,6 @@
-## Running Code on Cleanup with the `Drop` Trait
+## `Drop` Trait bilan tozalash uchun ishlaydigan kod
 
-The second trait important to the smart pointer pattern is `Drop`, which lets
-you customize what happens when a value is about to go out of scope. You can
-provide an implementation for the `Drop` trait on any type, and that code can
-be used to release resources like files or network connections.
+Agar qiymat o‘z doirasidan chiqqanda uni o‘zgartirish imkonini beradigan ikkinchi muhim sanalgan smart pointer namunasidan biri bu `Drop`dir. Siz `Drop` traitini implementatsiya qilish uchun xohlagan turdan foydalanishingiz mumkin, va kodni fayl yoki tarmoqlarni ulash resurslarini yaratish uchun ham ishlatilishi mumkin 
 
 We’re introducing `Drop` in the context of smart pointers because the
 functionality of the `Drop` trait is almost always used when implementing a