remove github workflows

.github/workflows/build_nix.yml

@@ -1,23 +0,0 @@
-name: "build nix"
-on:
-  pull_request:
-  push:
-jobs:
-  check_flurry_package:
-    runs-on: self-hosted
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-      - run: nix flake check -L --all-systems
-  build_flurry_package:
-    runs-on: self-hosted
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-      - run: nix build -L
-  build_flurry_shell:
-    runs-on: self-hosted
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-      - run: nix shell -L --command echo 'it works'

.github/workflows/rust.yml

@@ -1,45 +0,0 @@
-name: rust build
-
-on:
-  push:
-  pull_request:
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  check:
-    name: cargo check
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions-rust-lang/setup-rust-toolchain@v1
-        with:
-          toolchain: nightly
-      - run: cargo check
-
-  test:
-    name: cargo test
-    runs-on: ubuntu-latest
-    needs: check
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions-rust-lang/setup-rust-toolchain@v1
-        with:
-          toolchain: nightly
-      - run: cargo test --features all
-
-
-  clippy:
-    name: Clippy
-    runs-on: ubuntu-latest
-    if: github.event_name != 'pull_request'
-    timeout-minutes: 45
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions-rust-lang/setup-rust-toolchain@v1
-        with:
-          toolchain: nightly
-          components: clippy
-      - run: cargo clippy --features all --tests -- -Dclippy::all

.github/workflows/update.yml

@@ -1,26 +0,0 @@
-name: update dependencies
-on:
-  workflow_dispatch: # allows manual triggering
-  schedule:
-    - cron: '0 4 * * *' # at 04:00 every day
-
-jobs:
-  update:
-    name: Update dependencies
-    runs-on: self-hosted
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-      - run: nix shell -L nixpkgs#cargo --command cargo update
-      - run: nix shell -L nixpkgs#git --command git add Cargo.lock
-      - name: Check flake
-        uses: DeterminateSystems/flake-checker-action@main
-      - run: nix build -L
-      - name: Update Nix Flake Lock
-        uses: DeterminateSystems/update-flake-lock@main
-        with:
-          pr-title: "flake: update flake.lock"
-          pr-labels: |
-            dependencies
-            automated
-          token: ${{ secrets.GH_TOKEN_FOR_UPDATES }}