Buck: use snapshot_reference_images_path instead of copying images to XCTest bundle (#2915)

Author: nguyenhuy

.buckversion

@@ -1 +1 @@
-c948c20ebb155904909af05cfd16428a6992b98d
+f399f484bf13b47bcc2bf0f2e092ab5d8de9f6e6

BUCK

@@ -149,16 +149,6 @@ apple_resource(
   dirs = ['AsyncDisplayKitTests/TestResources'],
 )
 
-apple_resource(
-  name = 'SnapshotTestsResources',
-  files = [],
-  dirs = [
-    'AsyncDisplayKitTests/ReferenceImages_32',
-    'AsyncDisplayKitTests/ReferenceImages_64',
-    'AsyncDisplayKitTests/ReferenceImages_iOS_10',
-  ],
-)
-
 apple_test(
   name = 'Tests',
   test_host_app = ':TestHost',
@@ -178,14 +168,14 @@ apple_test(
     # ASTextNodePerformanceTests are excluded (#2173)
     excludes = ['AsyncDisplayKitTests/ASTextNodePerformanceTests.m*']
   ),
+  snapshot_reference_images_path='AsyncDisplayKitTests/ReferenceImages',
   preprocessor_flags = COMMON_PREPROCESSOR_FLAGS + [
     '-Wno-implicit-function-declaration',
   ],
   lang_preprocessor_flags = COMMON_LANG_PREPROCESSOR_FLAGS,
   linker_flags = COMMON_LINKER_FLAGS,
   deps = [
     ':TestsResources',
-    ':SnapshotTestsResources',
     '//Pods/OCMock:OCMock',
     '//Pods/FBSnapshotTestCase:FBSnapshotTestCase',
     '//Pods/JGMethodSwizzler:JGMethodSwizzler',