Remove defunct subregion code

HexGrid/Region.pm

@@ -12,11 +12,11 @@ use feature "signatures";
 no warnings "experimental::signatures";
 
 has tiles => (is => 'rw', default => sub { {} });
-has subregions => (is => 'rw', default => sub { {} });
 has name => (is => 'rw', required => 1);
 has defaults => (is => 'rw', default => sub { {} });
 has id_suffix => (is => 'rw', default => '_region');
 
+# New region with same properties, but doesn't import tiles
 sub clone($this)
 {
 	return HexGrid::Region->new
@@ -35,13 +35,6 @@ sub make_tile_at($this, $nw, $sw, %tile_settings)
 	$this->add_tile(HexGrid::Tile::at($nw, $sw, %settings));
 }
 
-sub add_subregion($this, $region) { $this->{subregions}{$region->{name}} = $region; }
-sub make_subregion($this, $name, %defaults)
-{
-	my $tile_defaults = merge(\%defaults, $this->{defaults});
-	$this->add_subregion(HexGrid::Region->new(name => $name, defaults => $tile_defaults));
-}
-
 sub iter_tile($this, $code)
 {
 	foreach my $nw (keys %{$this->{tiles}})
@@ -71,15 +64,6 @@ sub render($this, $svg, $laters, $grid)
 			$max_y = $y_translate if $y_translate > $max_y;
 		}
 	}
-	foreach my $region (keys %{$this->{subregions}})
-	{
-		my $m = $this->{subregions}{$region}->render($svg, $laters, $grid);
-
-		$min_x = $m->{min_x} if $m->{min_x} < $min_x;
-		$min_y = $m->{min_y} if $m->{min_y} < $min_y;
-		$max_x = $m->{max_x} if $m->{max_x} > $max_x;
-		$max_y = $m->{max_y} if $m->{max_y} > $max_y;
-	}
 	return { min_x => $min_x,min_y => $min_y,max_x => $max_x,max_y => $max_y, group => $g };
 }