GPencil: Fix unreported noise using Market Chisel pen

The interpolated points recalculated the angle again and this added noise. The angle must not be calculated and must use the previous thickness.

source/blender/editors/gpencil/gpencil_paint.c

@@ -3250,11 +3250,6 @@ static void gpencil_add_arc_points(tGPsdata *p, float mval[2], int segments)
     pt->pressure = pt_prev->pressure;
     pt->strength = pt_prev->strength;
 
-    /* Apply angle of stroke to brush size. */
-    if (brush_settings->draw_angle_factor != 0.0f) {
-      gp_brush_angle_segment(p, pt_prev, pt);
-    }
-
     /* Apply randomness to pressure. */
     if (brush_settings->draw_random_press > 0.0f) {
       float rand = BLI_rng_get_float(p->rng) * 2.0f - 1.0f;