Drop the match level on zezere claim button needle

This often seems to get a 90-95% match for some reason. Let's
just drop the threshold. I think it may be a kerning difference
based on the width of the MAC address?

Signed-off-by: Adam Williamson <awilliam@redhat.com>

needles/iot/zezere_claim_button-20210719.json

@@ -5,11 +5,12 @@
       "xpos": 185,
       "ypos": 222,
       "type": "match",
-      "width": 35
+      "width": 35,
+      "match": 90
     }
   ],
   "properties": [],
   "tags": [
     "zezere_claim_button"
   ]
-}
+}