Remove workflows (#639)

Summary:
sadface

Hopefully this can be reverted quickly but right now we don't have
Actions support in our org and the failures here are causing all
sorts of downstream errors.
Pull Request resolved: https://github.com/facebook/flipper/pull/639

Test Plan: This PR

Reviewed By: cekkaewnumchai

Differential Revision: D18506405

Pulled By: passy

fbshipit-source-id: 325209d91b5d985772195703a3429e49700d7666

.github/workflows/android.yml

@@ -1,27 +0,0 @@
-name: Publish Sample App
-
-on: 
-  release:
-    types: [created]
-
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v1
-    - name: set up JDK 1.8
-      uses: actions/setup-java@v1
-      with:
-        java-version: 1.8
-    - name: Build with Gradle
-      run: ./gradlew sample:assembleDebug
-    - name: Rename apk
-      run: mv android/sample/build/outputs/apk/debug/sample-debug.apk SampleApp-android.apk
-    - name: Upload
-      uses: skx/github-action-publish-binaries@master
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      with:
-        args: 'SampleApp-android.apk'

.github/workflows/nodejs.yml

@@ -1,27 +0,0 @@
-name: Node CI
-
-on: [push]
-
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-
-    strategy:
-      matrix:
-        node-version: [10.x, 12.x]
-
-    steps:
-    - uses: actions/checkout@v1
-    - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v1
-      with:
-        node-version: ${{ matrix.node-version }}
-    - name: yarn install
-      run: yarn
-    - name: lint
-      run: yarn lint
-    - name: test
-      run: yarn test
-    - name: build
-      run: yarn build --linux