Remove unnecessary brackets around function parameters

[saroad2]

Describe the style change

The following code:

def foo(a)
    print(a)

foo(a=([1, 2, 3]))

Should be changed into:

def foo(a)
    print(a)

foo(a=[1, 2, 3])

Examples in the current Black style

As for now, the example above doesn't change by Black.

Desired style

When circular brackets are not used to break up command parameters into different lines, it should be removed entirely

Additional context

I use python 3.9 on Windows computer.

[JelleZijlstra]

Similar to #1123, #2338, #2522, #608. This is a good idea, but I'm going to say it's a dupe of #608.