Remove some unused functions

All of these are unused since af9fbd1 "Introduce a new compositor
architecture". Since no one complained yet, I guess that means that we don't
need these any more. :-)

This was noticed while looking into the build log provided by
http://lists.cairographics.org/archives/cairo/2012-April/022993.html

Signed-off-by: Uli Schlachter <psychon@znc.in>

src/cairo-botor-scan-converter.c

@@ -2128,42 +2128,6 @@ botor_add_edge (cairo_botor_scan_converter_t *self,
     return CAIRO_STATUS_SUCCESS;
 }
 
-static cairo_status_t
-_cairo_botor_scan_converter_add_edge (void		*converter,
-				      const cairo_point_t *p1,
-				      const cairo_point_t *p2,
-				      int top, int bottom,
-				      int dir)
-{
-    cairo_botor_scan_converter_t *self = converter;
-    cairo_edge_t edge;
-
-    edge.line.p1 = *p1;
-    edge.line.p2 = *p2;
-    edge.top = top;
-    edge.bottom = bottom;
-    edge.dir = dir;
-
-    return botor_add_edge (self, &edge);
-}
-
-static cairo_status_t
-_cairo_botor_scan_converter_add_polygon (void		*converter,
-					 const cairo_polygon_t *polygon)
-{
-    cairo_botor_scan_converter_t *self = converter;
-    cairo_status_t status;
-    int i;
-
-    for (i = 0; i < polygon->num_edges; i++) {
-	status = botor_add_edge (self, &polygon->edges[i]);
-	if (unlikely (status))
-	    return status;
-    }
-
-    return CAIRO_STATUS_SUCCESS;
-}
-
 static void
 _cairo_botor_scan_converter_destroy (void *converter)
 {

src/cairo-path-stroke-polygon.c

@@ -232,50 +232,6 @@ join_is_clockwise (const cairo_stroke_face_t *in,
     return _cairo_slope_compare (&in->dev_vector, &out->dev_vector) < 0;
 }
 
-static cairo_int64_t
-distance_from_face (const cairo_stroke_face_t *face,
-		    const cairo_point_t *p,
-		    cairo_bool_t negate)
-{
-    int32_t dx = (p->x - face->point.x);
-    int32_t dy = (p->y - face->point.y);
-    cairo_int64_t d;
-
-    d = _cairo_int64_sub (_cairo_int32x32_64_mul (dx, face->dev_vector.dy),
-			  _cairo_int32x32_64_mul (dy, face->dev_vector.dx));
-    if (negate)
-	d = _cairo_int64_negate (d);
-    return d;
-}
-
-static cairo_int64_t
-distance_along_face (const cairo_stroke_face_t *face,
-		    const cairo_point_t *p)
-{
-    int32_t dx = (p->x - face->point.x);
-    int32_t dy = (p->y - face->point.y);
-    return _cairo_int64_add (_cairo_int32x32_64_mul (dx, face->dev_vector.dx),
-			     _cairo_int32x32_64_mul (dy, face->dev_vector.dy));
-}
-
-static void
-compute_inner_joint (cairo_point_t *p1, cairo_int64_t d_p1,
-		     const cairo_point_t *p2, cairo_int64_t d_p2,
-		     cairo_int64_t half_line_width)
-{
-    int32_t dx = p2->x - p1->x;
-    int32_t dy = p2->y - p1->y;
-
-    half_line_width = _cairo_int64_sub (half_line_width, d_p1);
-    d_p2 = _cairo_int64_sub (d_p2, d_p1);
-
-    p1->x += _cairo_int_96by64_32x64_divrem (_cairo_int64x32_128_mul (half_line_width, dx),
-					      d_p2).quo;
-
-    p1->y += _cairo_int_96by64_32x64_divrem (_cairo_int64x32_128_mul (half_line_width, dy),
-					      d_p2).quo;
-}
-
 static void
 inner_join (struct stroker *stroker,
 	    const cairo_stroke_face_t *in,