bed_mesh: improvements an changes:

use current profiles instead of the ones saved in the config file
remove matplotlib and numpy, caused many intall issues, graph was slow and not great for small screens
create a custom 2D graph to show the probed matrix

screen.py

@@ -10,7 +10,6 @@ import os
 import signal
 import subprocess
 import pathlib
-import traceback  # noqa
 
 gi.require_version("Gtk", "3.0")
 from gi.repository import Gtk, Gdk, GLib, Pango
@@ -244,7 +243,7 @@ class KlipperScreen(Gtk.Window):
     def ws_subscribe(self):
         requested_updates = {
             "objects": {
-                "bed_mesh": ["profile_name", "mesh_max", "mesh_min", "probed_matrix"],
+                "bed_mesh": ["profile_name", "mesh_max", "mesh_min", "probed_matrix", "profiles"],
                 "configfile": ["config"],
                 "display_status": ["progress", "message"],
                 "fan": ["speed"],