Update action.yml

Author: mcbarton

.github/actions/Build_and_Test_cppyy/action.yml

@@ -151,7 +151,6 @@ runs:
         cmake --build . --target install --parallel ${{ env.ncpus }}
         cd ..\cppyy-backend\build\
         # Build and Install cppyy-backend
-        $env:INCLUDE=$env:CPLUS_INCLUDE_PATH
         cmake -DCppInterOp_DIR=$env:CPPINTEROP_DIR ..
         cmake --build . --parallel ${{ env.ncpus }} -- /verbosity:diagnostic
         cp libcppyy-backend.lib $env:CPPINTEROP_DIR\lib\