Remove SkBicubicImageFilter, and all related tests.

expectations/gm/Test-ChromeOS-Alex-GMA3150-x86-Release/expected-results.json

 {
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           12831071530564277917
         ]
       ], 
       "bugs": [
@@ skipping 114 matching lines @@
         [
           "bitmap-64bitMD5", 
           11454861945224847249
         ]
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }, 
-    "bicubicfilter_565.png": {
-      "allowed-digests": [
-        [
-          "bitmap-64bitMD5", 
-          13864700347231029854
-        ]
-      ], 
-      "reviewed-by-human": true
-    }, 
-    "bicubicfilter_8888.png": {
-      "allowed-digests": [
-        [
-          "bitmap-64bitMD5", 
-          10469536215464879914
-        ]
-      ], 
-      "reviewed-by-human": true
-    }, 
     "bigbitmaprect_i_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           13015342363421751909
         ]
       ], 
       "bugs": [
         1578
       ], 
@@ skipping 6280 matching lines @@
           "bitmap-64bitMD5", 
           2149562185397201955
         ]
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }
   }
-}
+}