Build ICU on iOS

Change-Id: Idc6d5ed987540bc41d64ceab87af103591dc1911
Reviewed-on: https://skia-review.googlesource.com/105800
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
diff --git a/BUILD.gn b/BUILD.gn
index 364cde7..9face98 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1613,8 +1613,7 @@
       ":skia",
     ]
 
-    # TODO(halcanary): Build ICU on iOS.
-    if (is_ios || target_cpu == "wasm") {
+    if (target_cpu == "wasm") {
       sources = [
         "tools/shape/SkShaper_primitive.cpp",
       ]