Revert "add workflow for build"

.github/workflows/build.yml

@@ -1,46 +0,0 @@
-name: Build CI
-
-on: [pull_request, push]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-  steps:
-    - name: Set up Python 3.6
-      uses: actions/setup-python@v1
-      with:
-        python-version: 3.6
-    - name: Versions
-      run: |
-        python3 --version
-    - name: Checkout Current Repo
-      uses: actions/checkout@v1
-      with:
-        submodules: true
-    - name: Install gperf
-      run: |
-        sudo apt-get install -y gperf
-    - name: Make /esp folder
-      run: |
-        mkdir -p ~/esp
-        cd ~/esp
-    - name: Download ESP Toolchain
-      run: |
-        wget https://dl.espressif.com/dl/xtensa-esp32-elf-linux64-1.22.0-80-g6c4433a-5.2.0.tar.gz
-        tar -xzf xtensa-esp32-elf-linux64-1.22.0-80-g6c4433a-5.2.0.tar.gz
-    - name: Dump Xtensa ESP32 context
-      env:
-        PATH: $PATH:$HOME/esp/xtensa-esp32-elf/bin
-    - name: Clone ESP-IDF
-      run: |
-        git clone --branch v3.3.1 --recursive https://github.com/espressif/esp-idf.git
-    - name: Dump IDF path context
-      env: 
-        IDF_PATH: ~/esp/esp-idf
-    - name: Install Python dependencies
-      run: |
-        python -m pip install --user -r $IDF_PATH/requirements.txt
-    - name: make
-      run: |
-        cd $PROJECT_PATH
-        make firmware