Drop support for legacy mbed v5

Author: valeros

.github/workflows/examples.yml

@@ -12,9 +12,6 @@ jobs:
           - "examples/arduino-blink"
           - "examples/arduino-hid-usb-mouse"
           - "examples/arduino-internal-libs"
-          - "examples/mbed-blink"
-          - "examples/mbed-dsp"
-          - "examples/mbed-serial"
           - "examples/zephyr-blink"
           - "examples/zephyr-synchronization"
     runs-on: ${{ matrix.os }}

boards/teensy31.json

@@ -14,8 +14,7 @@
     "svd_path": "MK20D5.svd"
   },
   "frameworks": [
-    "arduino",
-    "mbed"
+    "arduino"
   ],
   "name": "Teensy 3.1 / 3.2",
   "upload": {