Make platform-specific headers textual
diff --git a/templates/gRPC-Core.podspec.template b/templates/gRPC-Core.podspec.template
index f3ac30c..5657df8 100644
--- a/templates/gRPC-Core.podspec.template
+++ b/templates/gRPC-Core.podspec.template
@@ -31,19 +31,11 @@
     return [f for f in out if not f.startswith("third_party/nanopb/")]
 
   def grpc_public_headers(libs):
-    excluded_files = ["include/grpc/support/atm_gcc_sync.h",
-                      "include/grpc/support/atm_windows.h",
-                      "include/grpc/support/sync_windows.h",
-                      "include/grpc/support/tls_gcc.h",
-                      "include/grpc/support/tls_msvc.h",
-                      "include/grpc/impl/codegen/atm_gcc_sync.h",
-                      "include/grpc/impl/codegen/atm_windows.h",
-                      "include/grpc/impl/codegen/sync_windows.h"]
     out = []
     for lib in libs:
       if lib.name in ("grpc", "gpr"):
         out += lib.get('public_headers', [])
-    return [f for f in out if not f in excluded_files]
+    return out
 
   def grpc_private_headers(libs):
     out = []