Remove references from blink/public to non-existing headers

An android specific block in BUILD.gn kept some references to
files that no longer existed after a cleanup in
https://chromium-review.googlesource.com/896839

This caused some local issues with trybots so it was time to
clean up the build files. Bye unnecessary code block.

Bug: 808221
Change-Id: I29ff4fc149fe408bd2a97517fbc338b408d13e7d
Reviewed-on: https://chromium-review.googlesource.com/c/1290272
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Daniel Bratell <bratell@opera.com>
Cr-Commit-Position: refs/heads/master@{#601073}
diff --git a/third_party/blink/public/BUILD.gn b/third_party/blink/public/BUILD.gn
index 85d3a0198..4f2030f 100644
--- a/third_party/blink/public/BUILD.gn
+++ b/third_party/blink/public/BUILD.gn
@@ -523,16 +523,6 @@
     "web/win/web_font_rendering.h",
   ]
 
-  if (is_android) {
-    # Android uses some Linux sources, put those back.
-    set_sources_assignment_filter([])
-    sources += [
-      "platform/linux/web_font_render_style.h",
-      "web/linux/web_font_rendering.h",
-    ]
-    set_sources_assignment_filter(sources_assignment_filter)
-  }
-
   public_configs = [
     ":blink_headers_config",