fix: changed the comments and removed unused code

Author: arteevraina

fypp-gfortran.sh

@@ -15,7 +15,7 @@ else
   njob="$(nproc)"
 fi
 
-# Create directories for the fpm project.
+# Create directory for saving preprocessed files.
 mkdir -p "$destdir/preprocessed_files"
 
 # Preprocess all files with .fypp extension in source directory.
@@ -26,8 +26,6 @@ find src -iname "*.fypp" \
 
 args=("$@")
 
-file=$(printf "%s\n" "${args[@]}" | grep -P '^.+\.[fF]90')
-
 exec gfortran "${args[@]}"