Removes the FAN dataset from mksurfdata.pl

The settings for the FAN dataset are not fully implemented in xml files.
Since the FAN dataset is not currently used in simulation campaigns,
the settings for this dataset are removed from mksurfdata.pl for the
time being.

Fixes #6137
[BFB]

components/elm/tools/mksurfdata_map/mksurfdata.pl

@@ -422,7 +422,7 @@ ($)
       foreach my $typ ( "lak", "veg", "voc", "top", "tex", "col","ord", 
                         "fmx", "lai", "urb", "org", "glc", "utp", "wet",
 		        "gdp", "peat","abm", "topostats" , "vic", "ch4", 
-                        "pho", "grvl", "slp10", "ero", "fert") {
+                        "pho", "grvl", "slp10", "ero") {
          my $lmask = `$scrdir/../../bld/queryDefaultNamelist.pl $mopts -silent -options type=$typ,mergeGIS=$merge_gis,hirespft=$hirespft -var lmask`;
          $lmask = trim($lmask);
          my $hgrid = `$scrdir/../../bld/queryDefaultNamelist.pl $mopts -options type=$typ,hirespft=$hirespft -var hgrid`;
@@ -538,7 +538,6 @@ ($)
  map_fgrvl         = '$map{'grvl'}'
  map_fslp10        = '$map{'slp10'}'
  map_fero          = '$map{'ero'}'
- map_ffert         = '$map{'fert'}'
  mksrf_fsoitex     = '$datfil{'tex'}'
  mksrf_forganic    = '$datfil{'org'}'
  mksrf_flakwat     = '$datfil{'lak'}'
@@ -562,7 +561,6 @@ ($)
  mksrf_fgrvl       = '$datfil{'grvl'}'
  mksrf_fslp10      = '$datfil{'slp10'}'
  mksrf_fero        = '$datfil{'ero'}'
- mksrf_ffert       = '$datfil{'fert'}'
 EOF
             my $urbdesc = "urb3den";
             my $rcp_option= "";