github: more CI tweaks (#483)

Tweak PR CI a bit more.  Remove complete step, change check name, add comments.

.github/workflows/ci.yml

@@ -60,7 +60,6 @@ jobs:
 
   # Compile/check/test.
   check:
-    name: ${{ matrix.toolchain }} / ${{ matrix.triple.target }}
     needs: [rustfmt, clippy]
     runs-on: ${{ matrix.triple.os }}
     continue-on-error: true
@@ -101,7 +100,7 @@ jobs:
               rust: stable,
               toTest: "true",
             }
-          # Disabled, unfortunately.
+          # Big Sur builds are disabled, unfortunately.
           # - {
           #     os: "macOS-11.0",
           #     target: "x86_64-apple-darwin",
@@ -194,13 +193,3 @@ jobs:
         env:
           CARGO_HUSKY_DONT_INSTALL_HOOKS: true
           RUST_BACKTRACE: full
-
-  complete:
-    needs: [check]
-    name: CI Pipeline Complete
-    runs-on: ubuntu-latest
-    steps:
-      - name: Echo completion
-        shell: bash
-        run: |
-          echo "Complete!"