Temporarily remove GHC-9.x GitHub workflows

Author: sgillespie

.github/workflows/haskell.yml

@@ -19,12 +19,13 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        # TODO: Add ghc910 when input-output-hk/devx is fixed
-        compiler-nix-name: [ghc810, ghc96, ghc98]
+        # TODO: Only ghc-8.10 works with the SRPs
+        compiler-nix-name: [ghc810]
         include:
+          # TODO: Only macOS aarch64 does not support ghc-8.10
           # We want a single job, because macOS runners are scarce.
-          - os: macos-latest
-            compiler-nix-name: ghc96
+          # - os: macos-latest
+          #   compiler-nix-name: ghc96
 
     env:
       # Increment this value to "invalidate" the cabal cache. Be sure to do this