diff --git a/lib/Slic3r/GCode.pm b/lib/Slic3r/GCode.pm
index 72280be06..958fb4411 100644
--- a/lib/Slic3r/GCode.pm
+++ b/lib/Slic3r/GCode.pm
@@ -5,7 +5,7 @@ use List::Util qw(min max first);
 use Slic3r::ExtrusionLoop ':roles';
 use Slic3r::ExtrusionPath ':roles';
 use Slic3r::Flow ':roles';
-use Slic3r::Geometry qw(epsilon scale unscale scaled_epsilon points_coincide PI X Y B);
+use Slic3r::Geometry qw(epsilon scale unscale PI X Y B);
 use Slic3r::Geometry::Clipper qw(union_ex offset_ex);
 use Slic3r::Surface ':types';
 
diff --git a/lib/Slic3r/Geometry.pm b/lib/Slic3r/Geometry.pm
index 18c05dfa5..8be03162f 100644
--- a/lib/Slic3r/Geometry.pm
+++ b/lib/Slic3r/Geometry.pm
@@ -13,7 +13,7 @@ our @EXPORT_OK = qw(
     point_along_segment polygon_segment_having_point polygon_has_subsegment
     deg2rad rad2deg
     rotate_points move_points
-    dot perp polygon_points_visibility
+    dot perp
     line_intersection bounding_box bounding_box_intersect
     angle3points
     chained_path chained_path_from collinear scale unscale
@@ -291,19 +291,6 @@ sub perp {
     return $u->[X] * $v->[Y] - $u->[Y] * $v->[X];
 }
 
-sub polygon_points_visibility {
-    my ($polygon, $p1, $p2) = @_;
-    
-    my $our_line = [ $p1, $p2 ];
-    foreach my $line (polygon_lines($polygon)) {
-        my $intersection = line_intersection($our_line, $line, 1) // next;
-        next if grep points_coincide($intersection, $_), $p1, $p2;
-        return 0;
-    }
-    
-    return 1;
-}
-
 sub line_intersects_any {
     my ($line, $lines) = @_;
     for (@$lines) {
diff --git a/lib/Slic3r/Layer.pm b/lib/Slic3r/Layer.pm
index 694f7050d..463413b55 100644
--- a/lib/Slic3r/Layer.pm
+++ b/lib/Slic3r/Layer.pm
@@ -3,7 +3,6 @@ use strict;
 use warnings;
 
 use List::Util qw(first);
-use Slic3r::Geometry qw(scale chained_path);
 use Slic3r::Geometry::Clipper qw(union_ex intersection_ex);
 
 # the following two were previously generated by Moo
diff --git a/lib/Slic3r/Layer/Region.pm b/lib/Slic3r/Layer/Region.pm
index 1c7838219..357f63645 100644
--- a/lib/Slic3r/Layer/Region.pm
+++ b/lib/Slic3r/Layer/Region.pm
@@ -6,7 +6,7 @@ use List::Util qw(sum first);
 use Slic3r::ExtrusionLoop ':roles';
 use Slic3r::ExtrusionPath ':roles';
 use Slic3r::Flow ':roles';
-use Slic3r::Geometry qw(PI A B scale unscale chained_path points_coincide);
+use Slic3r::Geometry qw(PI A B scale unscale chained_path);
 use Slic3r::Geometry::Clipper qw(union_ex diff_ex intersection_ex 
     offset offset_ex offset2 offset2_ex union_pt diff intersection
     union diff intersection_ppl diff_ppl);
diff --git a/lib/Slic3r/Print.pm b/lib/Slic3r/Print.pm
index b4510220a..08d4a449c 100644
--- a/lib/Slic3r/Print.pm
+++ b/lib/Slic3r/Print.pm
@@ -7,9 +7,9 @@ use File::Spec;
 use List::Util qw(min max first sum);
 use Slic3r::ExtrusionPath ':roles';
 use Slic3r::Flow ':roles';
-use Slic3r::Geometry qw(X Y Z X1 Y1 X2 Y2 MIN MAX PI scale unscale move_points chained_path
+use Slic3r::Geometry qw(X Y Z X1 Y1 X2 Y2 MIN MAX PI scale unscale chained_path
     convex_hull);
-use Slic3r::Geometry::Clipper qw(diff_ex union_ex union_pt intersection_ex intersection offset
+use Slic3r::Geometry::Clipper qw(diff_ex union_ex intersection_ex intersection offset
     offset2 union union_pt_chained JT_ROUND JT_SQUARE);
 use Slic3r::Print::State ':steps';
 
diff --git a/lib/Slic3r/Print/Object.pm b/lib/Slic3r/Print/Object.pm
index a1aaff307..d7878e25a 100644
--- a/lib/Slic3r/Print/Object.pm
+++ b/lib/Slic3r/Print/Object.pm
@@ -4,7 +4,7 @@ use warnings;
 
 use List::Util qw(min max sum first);
 use Slic3r::Flow ':roles';
-use Slic3r::Geometry qw(X Y Z PI scale unscale deg2rad rad2deg scaled_epsilon chained_path);
+use Slic3r::Geometry qw(X Y Z PI scale unscale chained_path);
 use Slic3r::Geometry::Clipper qw(diff diff_ex intersection intersection_ex union union_ex 
     offset offset_ex offset2 offset2_ex CLIPPER_OFFSET_SCALE JT_MITER);
 use Slic3r::Print::State ':steps';