Removes leo add and remove GA

.github/workflows/leo-add-remove.yml

@@ -1,43 +0,0 @@
-name: leo-add-remove
-on:
-  pull_request:
-  push:
-    branches:
-      - master
-    paths-ignore:
-      - 'docs/**'
-      - 'documentation/**'
-env:
-  RUST_BACKTRACE: 1
-
-jobs:
-  add:
-    name: Add Package ('leo add')
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v1
-
-      - name: Install Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: nightly
-          override: true
-          components: rustfmt
-
-      - name: Install Leo
-        uses: actions-rs/cargo@v1
-        env:
-          CARGO_NET_GIT_FETCH_WITH_CLI: true
-        with:
-          command: install
-          args: --path .
-
-      - name: 'leo add (w/o login) & remove'
-        run: |
-          cd .. && leo new my-app && cd my-app
-          leo add argus4130/xnor
-          leo remove xnor
-          leo clean
-