focus on cdc test

Author: hathach

test/hil/hil_test.py

@@ -598,11 +598,11 @@ def test_device_mtp(board):
 # note don't test 2 examples with cdc or 2 msc next to each other
 device_tests = [
     'device/cdc_dual_ports',
-    'device/dfu',
+    # 'device/dfu',
     'device/cdc_msc',
-    'device/dfu_runtime',
+    # 'device/dfu_runtime',
     'device/cdc_msc_freertos',
-    'device/hid_boot_interface',
+    # 'device/hid_boot_interface',
     # 'device/mtp'
 ]