Remove hack introduced by CL:879849

Internal profiling bits have been cleaned up.

Bug: 804479
Test: Built internal Chrome with this applied.
Change-Id: I9611b34eb573f75e9dce0d1fd91ca3486aabc003
Reviewed-on: https://chromium-review.googlesource.com/882313
Reviewed-by: agrieve <agrieve@chromium.org>
Commit-Queue: George Burgess <gbiv@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#531450}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 2e080064e2839394e3f73ce1f3ce3d8e2590431e

config/android/config.gni

@@ -44,9 +44,7 @@ if (is_android) {
   # This is the result of profiling Chromium. Blindly applying it to arbitrary
   # downstream projects and hoping it'll grant a speedup seems fragile. (Not
   # to mention that it resides in a Chromium-specific directory.)
-  # FIXME(gbiv): remove the !defined() check after removing custom profiling
-  # logic from //clank.
-  if (!defined(clang_default_afdo_profile) && build_with_chromium) {
+  if (build_with_chromium) {
     clang_default_afdo_profile =
         rebase_path("//chrome/android/profiles/afdo.prof")
   }