remove test workflow

.github/workflows/rust.yml

@@ -1,44 +0,0 @@
-name: Tests
-
-on:
-  push:
-    branches: [ "master" ]
-  pull_request:
-    branches: [ "master" ]
-
-env:
-  CARGO_TERM_COLOR: always
-
-jobs:
-  tests_2020:
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v3
-    - name: Build
-      run: cd 2020 && cargo build --verbose
-    - name: Run tests
-      run: cd 2020 && cargo test --verbose
-      
-  tests_2021:
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v3
-    - name: Build
-      run: cd 2021 && cargo build --verbose
-    - name: Run tests
-      run: cd 2021 && cargo test --verbose
-
-  tests_2022:
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v3
-    - name: Build
-      run: cd 2022 && cargo build --verbose
-    - name: Run tests
-      run: cd 2022 && cargo test --verbose