Removes duplicated 'iPad Mini' in Emulated Devices

There was two 'iPad Mini' entries in the Emulated Devices list.
Possibly from when updating the devices' specification: https://crrev.com/c/3043955
This cl removes the one with the older spec.

before: https://imgur.com/a/YF8zt0h
after: https://imgur.com/a/JsRBFL8

Bug: 1321533
Change-Id: Ie6951fdf55c5171a2df2818a8d390baf63b8d164
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3706960
Reviewed-by: Mathias Bynens <mathias@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>

front_end/models/emulation/EmulatedDevices.ts

@@ -1554,19 +1554,6 @@ const emulatedDevices = [
         'Mozilla/5.0 (Linux; U; en-us; KFAPWI Build/JDQ39) AppleWebKit/535.19 (KHTML, like Gecko) Silk/3.13 Safari/535.19 Silk-Accelerated=true',
     'type': 'tablet',
   },
-  {
-    'show-by-default': false,
-    'title': 'iPad Mini',
-    'screen': {
-      'horizontal': {'width': 1024, 'height': 768},
-      'device-pixel-ratio': 2,
-      'vertical': {'width': 768, 'height': 1024},
-    },
-    'capabilities': ['touch', 'mobile'],
-    'user-agent':
-        'Mozilla/5.0 (iPad; CPU OS 11_0 like Mac OS X) AppleWebKit/604.1.34 (KHTML, like Gecko) Version/11.0 Mobile/15A5341f Safari/604.1',
-    'type': 'tablet',
-  },
   {
     'order': 140,
     'show-by-default': false,