fix(ci): remove cachix environment (#1617)

.github/workflows/nix-develop.yml

@@ -22,7 +22,6 @@ jobs:
   check:
     runs-on: ubuntu-latest
     name: "nix check"
-    environment: cachix
     timeout-minutes: 5
     steps:
       - uses: actions/checkout@v3
@@ -41,7 +40,6 @@ jobs:
   develop:
     runs-on: ubuntu-latest
     name: "nix develop"
-    environment: cachix
     timeout-minutes: 10
     steps:
       - uses: actions/checkout@v3

.github/workflows/nix.yml

@@ -12,7 +12,6 @@ jobs:
   build:
     runs-on: ubuntu-latest
     name: "nix build"
-    environment: cachix
     timeout-minutes: 35
     steps:
       - uses: actions/checkout@v3
@@ -30,7 +29,6 @@ jobs:
   build-msrv:
     runs-on: ubuntu-latest
     name: "build msrv"
-    environment: cachix
     timeout-minutes: 35
     steps:
       - uses: actions/checkout@v3