remove monthly Hackage Matrix Builder CI check

I think the Hackage Matrix Builder project has shut down: haskell-CI/hackage-matrix-builder#83
haskell-hint · Aug 1, 2023 · 0ae12e9 · 0ae12e9
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commit 0ae12e9
Showing 1 changed file with 0 additions and 33 deletions.
diff --git a/.github/workflows/check-hackage-matrix.yml b/.github/workflows/check-hackage-matrix.yml