hw: Use new and improved RPi Pico symbol in schematic

Signed-off-by: Matthias Blankertz <matthias@blankertz.org>

hardware/tonberry-pico/tonberry-pico.kicad_prl

@@ -1,6 +1,6 @@
 {
   "board": {
-    "active_layer": 5,
+    "active_layer": 0,
     "active_layer_preset": "",
     "auto_track_width": true,
     "hidden_netclasses": [],

hardware/tonberry-pico/tonberry-pico.kicad_pro

@@ -48,7 +48,7 @@
         "silk_text_thickness": 0.1,
         "silk_text_upright": false,
         "zones": {
-          "min_clearance": 0.0
+          "min_clearance": 0.4064
         }
       },
       "diff_pair_dimensions": [
@@ -67,18 +67,6 @@
           "items_not_allowed|117348000|131000000|fea7aba8-73c4-4553-8cc8-83472c47a83b|00000000-0000-0000-0000-000000000000",
           ""
         ],
-        [
-          "items_not_allowed|122420000|136975000|8ffc6a0d-806e-4b99-922f-2baead2bd98b|00000000-0000-0000-0000-000000000000",
-          ""
-        ],
-        [
-          "items_not_allowed|148270000|136975000|804b9d74-91fa-4f75-bc54-8f55b801562f|00000000-0000-0000-0000-000000000000",
-          ""
-        ],
-        [
-          "items_not_allowed|148720706|136551802|f2c1e20e-a272-42d8-a551-3e9074b96921|00000000-0000-0000-0000-000000000000",
-          ""
-        ],
         [
           "nonmirrored_text_on_back_layer|210811000|131073000|e87ca627-5327-4f7e-ac1a-c1eadd662c0a|00000000-0000-0000-0000-000000000000",
           ""