[fidl][dart] No more sync targets from golden regen

Test: no behavior changed
Change-Id: I58a72a75b9cb6e5c76485cfcb67faf359d6ae683
diff --git a/bin/fidlgen_dart/goldens/goldens.txt b/bin/fidlgen_dart/goldens/goldens.txt
index 61cbcc0..fede88c 100644
--- a/bin/fidlgen_dart/goldens/goldens.txt
+++ b/bin/fidlgen_dart/goldens/goldens.txt
@@ -1,40 +1,30 @@
 bits.test.test.fidl.json
 bits.test.test.fidl.json_async.dart.golden
-bits.test.test.fidl.json_sync.dart.golden
 bits.test.test.fidl.json_test.dart.golden
 consts.test.fidl.json
 consts.test.fidl.json_async.dart.golden
-consts.test.fidl.json_sync.dart.golden
 consts.test.fidl.json_test.dart.golden
 doc_comments.test.fidl.json
 doc_comments.test.fidl.json_async.dart.golden
-doc_comments.test.fidl.json_sync.dart.golden
 doc_comments.test.fidl.json_test.dart.golden
 empty_struct.test.fidl.json
 empty_struct.test.fidl.json_async.dart.golden
-empty_struct.test.fidl.json_sync.dart.golden
 empty_struct.test.fidl.json_test.dart.golden
 ordinal_switch.test.fidl.json
 ordinal_switch.test.fidl.json_async.dart.golden
-ordinal_switch.test.fidl.json_sync.dart.golden
 ordinal_switch.test.fidl.json_test.dart.golden
 protocol_request.test.fidl.json
 protocol_request.test.fidl.json_async.dart.golden
-protocol_request.test.fidl.json_sync.dart.golden
 protocol_request.test.fidl.json_test.dart.golden
 protocols.test.fidl.json
 protocols.test.fidl.json_async.dart.golden
-protocols.test.fidl.json_sync.dart.golden
 protocols.test.fidl.json_test.dart.golden
 tables.test.fidl.json
 tables.test.fidl.json_async.dart.golden
-tables.test.fidl.json_sync.dart.golden
 tables.test.fidl.json_test.dart.golden
 union.test.fidl.json
 union.test.fidl.json_async.dart.golden
-union.test.fidl.json_sync.dart.golden
 union.test.fidl.json_test.dart.golden
 xunion.test.fidl.json
 xunion.test.fidl.json_async.dart.golden
-xunion.test.fidl.json_sync.dart.golden
 xunion.test.fidl.json_test.dart.golden
diff --git a/bin/fidlgen_dart/regen.sh b/bin/fidlgen_dart/regen.sh
index c8fd5e4..570beee 100755
--- a/bin/fidlgen_dart/regen.sh
+++ b/bin/fidlgen_dart/regen.sh
@@ -22,13 +22,11 @@
 GOLDENS=()
 for json_name in `find "${EXAMPLE_DIR}" -name '*.json'`; do
     json_name="$( basename $json_name )"
-    dart_sync_name=${json_name}_sync.dart.golden
     dart_async_name=${json_name}_async.dart.golden
     dart_test_name=${json_name}_test.dart.golden
 
     GOLDENS+=(
       $json_name,
-      $dart_sync_name,
       $dart_async_name,
       $dart_test_name,
     )