Update linux_and_macos.yml

Remove link construction

Author: hirokemono

.github/workflows/linux_and_macos.yml

@@ -50,11 +50,6 @@ jobs:
         brew install gfortran open-mpi fftw hdf5-mpi
         brew info gfortran
         brew info open-mpi
-
-#        a=`which gfortran-15`; \
-#        b=`dirname $a`; \
-#        c=$b/gfortran; \
-#        ln -s $a $c
         
         mpicc -v
         mpif90 -v