haskell.compiler.ghc8102BinaryMinimal: remove at 8.10.2
haskell.compiler.ghc8107BinaryMinimal: remove at 8.10.7
haskell.compiler.ghc924BinaryMinimal: remove at 9.2.4
On aarch64-linux the binary GHCs take up about 2.6GB (which compresses
pretty well on zfs as it turns out), so they are below the output limit
of Hydra. This allows us to drop the special casing of aarch platforms
in haskell-packages.nix. While we're at it, drop the minimal variants so
we don't unnecessarily build variants of the binary GHCs.
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