python3Packages.aiohttp: fixup package set
python3Packages.aiohttp: fixup package set

In b1d8335904dbdee98696a3094e1d918f40a40367 pytestCheckHook was overridden.
Overriding as is done in this commit breaks cross. Therefore, I attempted
to use one of the spliced sets but that did not work and got accidentally
committed and pushed.

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs