chromium.fyi: convert ios/unified_builder_tester builders to remote_run

masters/master.chromium.fyi/master.cfg

Index: masters/master.chromium.fyi/master.cfg
diff --git a/masters/master.chromium.fyi/master.cfg b/masters/master.chromium.fyi/master.cfg
index e50bd19bedaec264c5306cc712f14270052f0e17..73b72cff17a1f89ac41a30448e85c0daba887d5d 100644
--- a/masters/master.chromium.fyi/master.cfg
+++ b/masters/master.chromium.fyi/master.cfg
@@ -757,9 +757,7 @@ b_clang_tot_mac_asan_tester = {
 
 b_clang_tot_ios = {
   'name': 'ClangToTiOS',
-  'factory': annotator_factory.AnnotatorFactory().BaseFactory(
-    'ios/unified_builder_tester'
-  ),
+  'factory': m_remote_run('ios/unified_builder_tester'),
   'category': 'clang tot',
   'auto_reboot': True,
 }
@@ -1164,9 +1162,7 @@ b_chromium_libfuzzer_upload_mac_asan = {
 
 b_earlgrey_ios = {
   'name': 'EarlGreyiOS',
-  'factory': annotator_factory.AnnotatorFactory().BaseFactory(
-    'ios/unified_builder_tester'
-  ),
+  'factory': m_remote_run('ios/unified_builder_tester'),
   'category': 'earlgrey',
   'auto_reboot': True,
 }