In "remove_duplicates"exercise, my code is as followed. there is not syntax error but the result is wrong. what's wrong with my code?

```
def remove_duplicates(numbers):
new_numbers=numbers
for i in range(len(numbers)):
for j in range(i+1,len(numbers)):
if numbers[i]==numbers[j]:
new_numbers.pop(i)
break
return new_numbers
```