v.to.points: use standardized options (https://trac.osgeo.org/grass/ticket/2409)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@63145 15284696-431f-4ddb-bdfa-cd5b030d7da7

vector/v.to.points/main.c

@@ -61,8 +61,6 @@ int main(int argc, char **argv)
     opt.input = G_define_standard_option(G_OPT_V_INPUT);
 
     opt.lfield = G_define_standard_option(G_OPT_V_FIELD);
-    opt.lfield->key = "llayer";
-    opt.lfield->answer = "1";
     opt.lfield->label = "Line layer number or name";
     opt.lfield->guisection = _("Selection");