drop test build

.github/workflows/build.yml

@@ -58,22 +58,3 @@ jobs:
     - name: build
       run: cmake -DBUILD_GUI_DEPS=ON && make -j3
 
-  test-ubuntu:
-    needs: build-ubuntu
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v1
-      with:
-        submodules: recursive
-    - name: remove bundled boost
-      run: sudo rm -rf /usr/local/share/boost
-    - name: update apt
-      run: sudo apt update
-    - name: install monero dependencies
-      run: sudo apt -y install build-essential cmake libboost-all-dev miniupnpc libunbound-dev graphviz doxygen libunwind8-dev pkg-config libssl-dev libzmq3-dev libsodium-dev libhidapi-dev libnorm-dev libusb-1.0-0-dev libpgm-dev
-    - name: install requests
-      run: pip install requests
-    - name: tests
-      env:
-        CTEST_OUTPUT_ON_FAILURE: ON
-      run: make release-test -j3