Revert "Change benchmark workflow" (#29)

.github/workflows/benches.yml

@@ -0,0 +1,12 @@
+name: Rust benchmarks
+
+on: [pull_request]
+jobs:
+  runBenchmark:
+    name: run benchmark
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: jasonwilliams/criterion-compare-action@move_to_actions
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/rust-ci.yml

@@ -154,20 +154,3 @@ jobs:
         with:
           command: fmt
           args: --all -- --check
-
-  bench:
-    name: Benchmark
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Setup Rust environment
-        uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
-          override: true
-      - name: Run benchmarks
-        uses: actions-rs/cargo@v1
-        with:
-          command: bench
-