Remove flaky flag from ios32 builders. (#77010)

Bug: https://github.com/flutter/flutter/issues/76876

dev/prod_builders.json

@@ -856,7 +856,7 @@
       "name": "Mac_ios flutter_gallery__transition_perf_e2e_ios32",
       "repo": "flutter",
       "task_name": "mac_ios_flutter_gallery__transition_perf_e2e_ios32",
-      "flaky": true
+      "flaky": false
     },
     {
       "name": "Mac_ios flutter_gallery_ios__compile",
@@ -964,7 +964,7 @@
       "name": "Mac_ios native_ui_tests_ios32",
       "repo": "flutter",
       "task_name": "mac_ios_native_ui_tests_ios32",
-      "flaky": true
+      "flaky": false
     },
     {
       "name": "Mac_ios new_gallery_ios__transition_perf",