removal of some comments which caused warning while compiled with gcc

git-svn-id: https://ppm.inf.ethz.ch/svn/ppmnumerics/branches/ngtopo/libppmnumerics@646 7c7fe9aa-52eb-4d9e-b0a8-ba7d787348e9

src/ppm_mg_smooth_coarse.f

@@ -633,8 +633,7 @@
                 CALL ppm_map_field_push(topoid,mesh_id_g(mlev),uc_dummy,&
         &                         info)
                 CALL ppm_map_field_send(info)
-                !TODO: I'm not 100% sure about that since the signature
-                !has been changed dramatically
+
                 CALL ppm_map_field_pop(topoid,mesh_id_g(mlev),uc_dummy,&
         &                          ghostsize,info)
                ENDIF

src/ppm_mg_smooth_fine.f

@@ -359,8 +359,7 @@ dz=dz_d
         &                         ghostsize,info)
               CALL ppm_map_field_push(topoid,mesh_id_g(mlev),u,info)
               CALL ppm_map_field_send(info)
-              !TODO: I'm not 100% sure about that since the signature
-              !has been changed dramatically
+
               CALL ppm_map_field_pop(topoid,mesh_id_g(mlev),u,ghostsize,info)
             DO isub=1,nsubs
               DO j=start(2,isub,1),istop(2,isub,1)