r.water.outlet: remove unused variable

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@57763 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.water.outlet/main.c

@@ -54,7 +54,7 @@ int main(int argc, char *argv[])
     double N, E;
     int row, col, basin_fd, drain_fd;
     CELL *cell_buf;
-    char drain_name[GNAME_MAX], E_f, dr_f, ba_f, N_f, errr;
+    char drain_name[GNAME_MAX], E_f, ba_f, N_f, errr;
     struct GModule *module;
     struct {
       struct Option *input, *output, *coords;
@@ -98,7 +98,7 @@ int main(int argc, char *argv[])
     }
 
     G_get_set_window(&window);
-    dr_f = ba_f = N_f = E_f = errr = 0;
+    ba_f = N_f = E_f = errr = 0;
 
     nrows = Rast_window_rows();
     ncols = Rast_window_cols();