Revert "hackage-packages.nix: automatic Haskell package set update"

This reverts commit c6ff4d61.

error: while evaluating anonymous function at /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/mr-est/eval-1-lassulus.ewr1.nix.ci/.gc-of-borg-outpaths.nix:39:12, called from undefined position:
while evaluating anonymous function at /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/mr-est/eval-1-lassulus.ewr1.nix.ci/pkgs/top-level/release-lib.nix:121:6, called from /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/mr-est/eval-1-lassulus.ewr1.nix.ci/lib/attrsets.nix:292:43:
while evaluating 'hydraJob' at /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/mr-est/eval-1-lassulus.ewr1.nix.ci/lib/customisation.nix:157:14, called from /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/mr-est/eval-1-lassulus.ewr1.nix.ci/pkgs/top-level/release-lib.nix:121:14:
while evaluating the attribute 'drvPath' at /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/mr-est/eval-1-lassulus.ewr1.nix.ci/lib/customisation.nix:174:13:
while evaluating the attribute 'drvPath' at /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/mr-est/eval-1-lassulus.ewr1.nix.ci/lib/customisation.nix:141:13:
while evaluating the attribute 'buildInputs' of the derivation 'tonaparser-0.1.0.0' at /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/mr-est/eval-1-lassulus.ewr1.nix.ci/pkgs/stdenv/generic/make-derivation.nix:185:11:
while evaluating the attribute 'buildInputs' of the derivation 'tonatona-0.1.0.0' at /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/mr-est/eval-1-lassulus.ewr1.nix.ci/pkgs/stdenv/generic/make-derivation.nix:185:11:
infinite recursion encountered, at undefined position