Remove shell specification

.github/workflows/ccpp.yml

@@ -34,7 +34,6 @@ jobs:
     - name: Configure CMake
       # Use a bash shell so we can use the same syntax for environment variable
       # access regardless of the host operating system
-      shell: bash
       working-directory: ${{runner.workspace}}/build
       # Note the current convention is to use the -S and -B options here to specify source 
       # and build directories, but this is only available with CMake 3.13 and higher.  
@@ -43,13 +42,11 @@ jobs:
 
     - name: Build
       working-directory: ${{runner.workspace}}/build
-      shell: bash
       # Execute the build.  You can specify a specific target with "--target <NAME>"
       run: cmake --build . --config $BUILD_TYPE
 
     - name: Test
       working-directory: ${{runner.workspace}}/build
-      shell: bash
       # Execute tests defined by the CMake configuration.  
       # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
       run: ctest -C $BUILD_TYPE --verbose