Revert of Implement arflags in the GN build.

build/config/win/BUILD.gn

Index: build/config/win/BUILD.gn
diff --git a/build/config/win/BUILD.gn b/build/config/win/BUILD.gn
index 7442ade5d464dc2b5655a6756088b05ebe18b6f4..bfa69bee3aac56fd4917f70735c7100348c78296 100644
--- a/build/config/win/BUILD.gn
+++ b/build/config/win/BUILD.gn
@@ -103,18 +103,6 @@
     assert(!is_win_fastlink, "/PROFILE and /DEBUG:FASTLINK are incompatible")
     ldflags = [ "/PROFILE" ]
   }
-
-  # arflags apply only to static_libraries. The normal linker configs are only
-  # set for executable and shared library targets so arflags must be set
-  # elsewhere. Since this is relatively contained, we just apply them in this
-  # more general config and they will only have an effect on static libraries.
-  arflags = [
-    # "No public symbols found; archive member will be inaccessible." This
-    # means that one or more object files in the library can never be
-    # pulled in to targets that link to this library. It's just a warning that
-    # the source file is a no-op.
-    "/ignore:4221",
-  ]
 }
 
 config("vs_code_analysis") {