[skip ci] add back ci.yaml

goodbye for now.yaml → .github/workflows/ci.yaml

@@ -1,6 +1,6 @@
 on: [push, pull_request]
 
-name: Continuous integration
+name: Continuous Integration
 
 jobs:
   check:
@@ -46,19 +46,3 @@ jobs:
         with:
           command: fmt
           args: --all -- --check
-
-  clippy:
-    name: Clippy
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
-          override: true
-      - run: rustup component add clippy
-      - uses: actions-rs/cargo@v1
-        with:
-          command: clippy
-          args: -- -D