Remove unused lib dir

lib/BluetoothOTA/library.json

@@ -1,32 +0,0 @@
-{
-  "name": "BluetoothOTA",
-  "keywords": "esp32, bluetooth",
-  "description": "A BTLE based software OTA update tool",
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/geeksville/fixme.git"
-  },
-  "authors": [
-    {
-      "name": "Kevin Hester",
-      "email": "kevinh@geeksville.com",
-      "url": "https://github.com/geeksville",
-      "maintainer": true
-    }
-  ],
-  "version": "0.0.1",
-  "frameworks": "arduino",
-  "platforms": "*",
-  "dependencies": [
-    {
-      "name": "Update"
-    },
-    {
-      "name": "ESP32 BLE Arduino"
-    },
-    {
-      "name": "arduino-fsm",
-      "version": "https://github.com/meshtastic/arduino-fsm.git"
-    }
-  ]
-}