remove old sim

Author: thomasjball

pxtarget.json

@@ -250,12 +250,6 @@
         "parts": true,
         "partsAspectRatio": 0.69,
         "messageSimulators": {
-            "jacdac": {
-                "url": "https://microsoft.github.io/jacdac-docs/tools/makecode-sim?webusb=0&parentOrigin=$PARENT_ORIGIN$",
-                "localHostUrl": "http://localhost:8000/tools/makecode-sim?webusb=0&parentOrigin=$PARENT_ORIGIN$",
-                "aspectRatio": 1.22,
-                "permanent": true
-            },
             "robot": {
                 "url": "https://microsoft.github.io/microbit-robot/?parentOrigin=$PARENT_ORIGIN$",
                 "localHostUrl": "http://localhost:3000/microbit-robot/?parentOrigin=$PARENT_ORIGIN$",