kunsi-p14s: remove network bridge

Something causes the network to hang when switching from wired to
wireless networking. I want to eliminate as much problems as possible.

nodes/kunsi-p14s.py

@@ -35,7 +35,10 @@ nodes['kunsi-p14s'] = {
             },
         },
         'interfaces': {
-            'br0': {
+            'enp2s0f0':  {
+                'dhcp': True,
+            },
+            'enp5s0': {
                 'dhcp': True,
             },
             # there is also wlp3s0, but that's managed by netctl
@@ -126,16 +129,6 @@ nodes['kunsi-p14s'] = {
                 },
             },
         },
-        'systemd-networkd': {
-            'bridges': {
-                'br0': {
-                    'match': {
-                        'enp2s0f0',
-                        'enp5s0',
-                    },
-                },
-            },
-        },
         'timezone': 'Europe/Berlin',
         'users': {
             'kunsi': {