Tweak kernel.org patch needles again

This is getting annoying. We're getting, like, 94-95% matches
for the recent needles sometimes. Instead of continuing to make
more and more needles, let's try dropping the required match
threshold a bit. The kde-20191206 needle doesn't *seem* to be
needed so let's get rid of it.

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

needles/browser/kernelorg_patch-20191204.json

@@ -5,7 +5,8 @@
       "ypos": 652,
       "width": 55,
       "xpos": 508,
-      "height": 17
+      "height": 17,
+      "match": 93
     }
   ],
   "properties": [],

needles/browser/kernelorg_patch-20191206.json

@@ -5,7 +5,8 @@
       "ypos": 652,
       "height": 17,
       "xpos": 509,
-      "type": "match"
+      "type": "match",
+      "match": 93
     }
   ],
   "properties": [],

needles/browser/kernelorg_patch-kde-20191206.json

@@ -1,15 +0,0 @@
-{
-  "area": [
-    {
-      "xpos": 509,
-      "width": 55,
-      "height": 17,
-      "type": "match",
-      "ypos": 654
-    }
-  ],
-  "properties": [],
-  "tags": [
-    "browser_kernelorg_patch"
-  ]
-}