Apply suggestion from @aschackmull

Co-authored-by: Anders Schack-Mulligen <aschackmull@users.noreply.github.com>

Author: yoff

python/ql/lib/semmle/python/controlflow/internal/AstNodeImpl.qll

@@ -1657,7 +1657,7 @@ private module Input implements InputSig1, InputSig2 {
     or
     e instanceof Py::Subscript
     or
-    e instanceof Py::BinaryExpr and e.(Py::BinaryExpr).getOp() instanceof Py::Div
+    e.(Py::BinaryExpr).getOp() instanceof Py::Div
     or
     e instanceof Py::ImportExpr
     or