Remove unnecessary list items?

Question

Python

Hello everyone, I have this list.

<class 'str'>
<class 'str'>
<class 'str'>
<class 'str'>
<class 'str'>
<class 'str'>
<class 'str'>
<class 'str'>
<class 'str'>
<class 'str'>
<class 'str'>

It is necessary to remove some elements that are not needed. I try to do so

for i in list:
    if 'string' in i:
        list.remove(i)

but it does not work, tell me something)