Update phpstan.neon

Author: staabm

phpstan.neon

@@ -34,8 +34,6 @@ parameters:
         # false positive
         - '#Access to an undefined property Rector\\Contract\\PhpParser\\Node\\StmtsAwareInterface\:\:\$stmts#'
 
-        - '#PhpParser\\Node\\Stmt\\Expression is not generic#'
-
         # more advanced usage, but not always working
         # see https://github.com/rectorphp/rector-src/actions/runs/11798721617/job/32865546672?pr=6422#step:5:110
         - '#Doing instanceof PHPStan\\Type\\.+ is error\-prone and deprecated#'