appmgr: remove github action

appmgr/.github/workflows/rust.yml

@@ -1,30 +0,0 @@
-name: Rust
-
-on: [push]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v1
-      - name: Cache .cargo
-        uses: actions/cache@v1
-        with:
-          path: ~/.cargo
-          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
-            ${{ runner.os }}-cargo-
-      - name: Cache target release directory
-        uses: actions/cache@v1
-        with:
-          path: target/release
-          key: ${{ runner.os }}-target-release-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-target-release-${{ hashFiles('**/Cargo.lock') }}
-            ${{ runner.os }}-target-release-
-      - name: Check
-        run: cargo check
-      - name: Test
-        run: cargo test --release