🔥 remove unneeded jobs

.github/workflows/ubuntu.yml

@@ -3,46 +3,6 @@ name: Ubuntu
 on: [push, pull_request]
 
 jobs:
-  gcc_build:
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v1
-    - name: install_gcc
-      run: |
-           sudo apt update
-           sudo apt install gcc-10 g++-10
-      shell: bash
-    - name: cmake
-      run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On
-      env:
-        CC:   gcc-10
-        CXX:  g++-10
-    - name: build
-      run: cmake --build build --parallel 10
-    - name: test
-      run: cd build ; ctest -j 10 --output-on-failure
-
-  clang_build:
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v1
-    - name: install_clang
-      run: |
-           sudo apt update
-           sudo apt install clang-10
-      shell: bash
-    - name: cmake
-      run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On
-      env:
-        CC:   clang-10
-        CXX:  clang++-10
-    - name: build
-      run: cmake --build build --parallel 10
-    - name: test
-      run: cd build ; ctest -j 10 --output-on-failure
-
   clang_build_cxx20:
     runs-on: ubuntu-latest
 
@@ -63,27 +23,6 @@ jobs:
     - name: test
       run: cd build ; ctest -j 10 --output-on-failure
 
-  ci_test_clang:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v1
-      - name: install_ninja
-        run: |
-          sudo apt update
-          sudo apt install ninja-build
-        shell: bash
-      - name: install_clang
-        run: |
-          wget https://apt.llvm.org/llvm.sh
-          chmod +x llvm.sh
-          sudo ./llvm.sh 11
-        shell: bash
-      - name: cmake
-        run: cmake -S . -B build -DJSON_CI=On
-      - name: build
-        run: cmake --build build --target ci_test_clang
-
   ci_clang_analyze:
     runs-on: ubuntu-latest
 
@@ -106,7 +45,7 @@ jobs:
       - name: build
         run: cmake --build build --target ci_clang_analyze
 
-  ci_build_gcc:
+  ci_test_gcc:
     runs-on: ubuntu-latest
     container:
       image: nlohmann/json-ci:latest