chore(nix->guix): delete Nix estate-wide (#138) (#87)

Automated sweep to eradicate Nix from the estate as Guix is now the sole
reproducible environment.

Author: hyperpolymath

.github/workflows/hypatia-scan.yml

@@ -27,4 +27,4 @@ permissions:
 jobs:
   hypatia:
     uses: hyperpolymath/standards/.github/workflows/hypatia-scan-reusable.yml@81dbf2dd854b1444fd6236fa2352474383b2c2b9
-    secrets: inherit
+    secrets: inherit

.github/workflows/scorecard.yml

@@ -22,4 +22,4 @@ jobs:
       security-events: write
       id-token: write
     uses: hyperpolymath/standards/.github/workflows/scorecard-reusable.yml@81dbf2dd854b1444fd6236fa2352474383b2c2b9
-    secrets: inherit
+    secrets: inherit

.github/workflows/secret-scanner.yml

@@ -19,4 +19,4 @@ jobs:
     permissions:
       contents: read
     uses: hyperpolymath/standards/.github/workflows/secret-scanner-reusable.yml@c65436ee3351cd6b0fa14b142938b195efc77586
-    secrets: inherit
+    secrets: inherit