How to remove edge lines when drawing a triangle mesh with Makie?

New to Julia
1

Briefly if I run

using CairoMakie, Makie, DelaunayTriangulation, GeometryBasics


P = 
[
(0.0,0.0),(2.0,1.0),(4.0,0.0),
(6.0,2.0),(2.0,3.0),(3.0,4.0),
(6.0,6.0),(0.0,6.0),(0.0,0.0)
]

boundary_nodes, points = convert_boundary_points_to_indices(P)

tri = DelaunayTriangulation.triangulate(points)

refine!(tri; max_area=0.1e-2get_total_area(tri))

pts = [Point(val[1], val[2]) for val in tri.points]
fcs = [TriangleFace(val[1], val[2], val[3]) for val in tri.triangles]


msh = GeometryBasics.Mesh(pts, fcs)

mesh(msh)

the mesh also includes the edge lines from the triangle mesh.

How do I get rid of them ? I only want a smooth surface please.