finalize integration into GCode.cpp export functions, remove unused

edge grids

src/libslic3r/Subdivide.hpp

@@ -0,0 +1,12 @@
+#ifndef libslic3r_Subdivide_hpp_
+#define libslic3r_Subdivide_hpp_
+
+#include "TriangleMesh.hpp"
+
+namespace Slic3r {
+
+indexed_triangle_set its_subdivide(const indexed_triangle_set &its, float max_length);
+
+}
+
+#endif //libslic3r_Subdivide_hpp_