Removed unnecessary aws_conn_id param from operators constructors

[dominikhei]

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As discussed on #51196 there are some more operators, that set the aws_conn_id in their constructor, even though it is set by the base operator from which they inherit. This does not lead to any errors, but is not consistent, which is why I removed it. Feel free to close the PR if you think it's unnecessary.

[vincbeck]

LGTM! Thanks for the cleanup. Related to the discussion here, I think we should not keep parameter from parent classes in docstring. Let's agree first on whether we want to keep them, and then, potentially, you can update this PR

[o-nikolas]

Thanks for opening this! I'm still in favour of keeping the doc strings (I replied on the other thread I started that Vincent linked).

[o-nikolas]

Can you add tests for these operators like you did for the RDS case? I know not all of them have it, but it's a great mechanism to ensure we don't regress, so if you're modifying these ops anyway, adding the same tests would be great.

[dominikhei]

Can you add tests for these operators like you did for the RDS case? I know not all of them have it, but it's a great mechanism to ensure we don't regress, so if you're modifying these ops anyway, adding the same tests would be great.

I added them for all the operators I have adjusted before + I have renamed the test: no_conn to default_conn to avoid any misunderstandings in the future. If u want me to add them to other operators etc. lmk!