Update cmake-linux-x86.yml

Author: sam-astro

.github/workflows/cmake-linux-x86.yml

@@ -36,8 +36,6 @@ jobs:
       # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
       # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
       run: |
-        export CC=/usr/local/bin/gcc
-        export CXX=/usr/local/bin/g++
         mkdir ${{github.workspace}}/build
         cd ${{github.workspace}}/build
         cmake -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DLLVM_TARGETS_TO_BUILD="X86" -G Ninja ../src