AppVeyor: Temporarily disable building benchmarks and examples
AppVeyor: Temporarily disable building benchmarks and examples

The Criterion version shipped with Stackage LTS 7 doesn't compile on
Win32. To make CI pass, benchmarks and examples (of which some depend
on Criterion) need to be disabled until this is resolved.

See: https://github.com/fpco/stackage/issues/1912

NicolasT/reedsolomon,NicolasT/reedsolomon