remove unneeded flags

gyp/skia_for_android_framework_defines.gypi

Index: gyp/skia_for_android_framework_defines.gypi
diff --git a/gyp/skia_for_android_framework_defines.gypi b/gyp/skia_for_android_framework_defines.gypi
index 47e9016086d6bb4eebdba49a318425ffa4037894..758dd0cd8a420bc23fc71c87ae187dd2134c0765 100644
--- a/gyp/skia_for_android_framework_defines.gypi
+++ b/gyp/skia_for_android_framework_defines.gypi
@@ -13,12 +13,10 @@
     # If these become 'permanent', they should be moved into common_variables.gypi
     #
     'skia_for_android_framework_defines': [
-      'SK_SUPPORT_LEGACY_GRADIENT_FACTORIES',
       'SK_SUPPORT_LEGACY_PUBLIC_IMAGEINFO_FIELDS',
       'SK_SUPPORT_LEGACY_GETDEVICE',
       # Needed until we fix skbug.com/2440.
       'SK_SUPPORT_LEGACY_CLIPTOLAYERFLAG',
-      'SK_LEGACY_DRAWPICTURECALLBACK',
     ],
   },
 }