Remove Nexus10 strokes3_gpu expectations. This one seems to change every run (uninit? driver bug?).

expectations/gm/base-android-nexus-10/expected-results.json

 {
   "actual-results": {
     "failed": null, 
     "failure-ignored": null, 
     "no-comparison": null, 
     "succeeded": null
   }, 
   "expected-results": {
     "3x3bitmaprect_gpu.png": {
       "allowed-digests": [
@@ skipping 3354 matching lines @@
     }, 
     "strokes3_8888.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           16717945387368894511
         ]
       ], 
       "ignore-failure": false
     }, 
-    "strokes3_gpu.png": {
-      "allowed-digests": [
-        [
-          "bitmap-64bitMD5", 
-          74227091383830983
-        ]
-      ], 
-      "ignore-failure": false
-    }, 
     "strokes3_msaa4.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           11012173931681422127
         ]
       ], 
       "ignore-failure": false
     }, 
     "strokes_poly_gpu.png": {
@@ skipping 449 matching lines @@
     "xfermodes_msaa4.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           5822077952919040027
         ]
       ], 
       "ignore-failure": false
     }
   }
-}
+}