[2.7] bpo-33852: Remove misplaced parentheses around 'list'. (GH-7672) (#7716)

'expresson list' refers to the grammar term 'expression_list' in the subscription production..
(cherry picked from commit 4fddd4e4069aad9efad999d8d9ce3cd9fb523a5c)

Co-authored-by: Andrés Delfino <adelfino@gmail.com>
1 file changed