In main program unit `test_successive_overlap`, do not print eddies

for which `delta_out` == 1 and eddies for which `delta_in` == 1. This
is redundant with information in file `edgelist.csv`. I have checked
in test `Successive_overlap_global` that eddies for which `delta_out`
== 1 correspond to column i1 (sorted, unique) and eddies for which
`delta_in` == 1 correspond to column i2 (sorted, unique).

Tests/test_successive_overlap.f90

@@ -104,30 +104,15 @@ program test_successive_overlap
   print *, 'Created file "edgelist.csv".'
 
   print *, snapshot_1, ":"
-  print *, "Eddies for which delta_out == 1:"
-
-  do i = 1, flow(1)%number_vis_extr
-     if (flow(1)%list_vis(i)%delta_out /= huge(0)) &
-          write(unit = *, fmt = "(i0, 1x)",  advance = "no") i
-  end do
-
-  print *
   print *, "Valid isolated eddies:"
   do i = 1, flow(1)%number_vis_extr
      if (flow(1)%list_vis(i)%valid .and. flow(1)%list_vis(i)%delta_out &
           == huge(0)) write(unit = *, fmt = "(i0, 1x)", advance = "no") i
   end do
-
   print *
-  print *, Snapshot_2, ":"
-  print *, "Eddies for which delta_in == 1:"
-
-  do i = 1, flow(2)%number_vis_extr
-     if (flow(2)%list_vis(i)%delta_in /= huge(0)) &
-          write(unit = *, fmt = "(i0, 1x)", advance = "no") i
-  end do
 
   print *
+  print *, Snapshot_2, ":"
   print *, "Valid isolated eddies:"
 
   do i = 1, flow(2)%number_vis_extr

candidate_overlap.f90

@@ -18,7 +18,8 @@ contains
     ! extremum. 0 at other points.
 
     type(eddy), intent(in):: list_vis(:)
-    ! Visible eddies at a given date. We need components ? to be defined.
+    ! Visible eddies at a given date. We need components valid and
+    ! cyclone to be defined.
 
     logical, intent(in):: cyclone ! cyclonicity of the target extremum