Revert "Check added types/attributes on freeze test too"

This reverts commit a6a3726ed273f105fd7dc994931066491b0d4fdd.

Reason for revert: Breaks an internal build (see b/329217616)

Bug: 329217616
Bug: 296875906
Change-Id: Iac204a3e7501cd2d0e691f10b5bca88586f315aa
diff --git a/tests/sepolicy_freeze_test.py b/tests/sepolicy_freeze_test.py
index f72340a..72c8fde 100644
--- a/tests/sepolicy_freeze_test.py
+++ b/tests/sepolicy_freeze_test.py
@@ -37,46 +37,20 @@
 
     current_policy = mini_parser.MiniCilParser(options.current)
     prebuilt_policy = mini_parser.MiniCilParser(options.prebuilt)
-    current_policy.typeattributes = set(filter(lambda x: "base_typeattr_" not in x,
-                                               current_policy.typeattributes))
-    prebuilt_policy.typeattributes = set(filter(lambda x: "base_typeattr_" not in x,
-                                                prebuilt_policy.typeattributes))
 
     results = ""
     removed_types = prebuilt_policy.types - current_policy.types
-    added_types = current_policy.types - prebuilt_policy.types
     removed_attributes = prebuilt_policy.typeattributes - current_policy.typeattributes
-    added_attributes = current_policy.typeattributes - prebuilt_policy.typeattributes
+    removed_attributes = set(filter(lambda x: "base_typeattr_" not in x, removed_attributes))
 
     if removed_types:
         results += "The following public types were removed:\n" + ", ".join(removed_types) + "\n"
 
-    if added_types:
-        results += "The following public types were added:\n" + ", ".join(added_types) + "\n"
-
     if removed_attributes:
         results += "The following public attributes were removed:\n" + ", ".join(removed_attributes) + "\n"
 
-    if added_attributes:
-        results += "The following public attributes were added:\n" + ", ".join(added_attributes) + "\n"
-
-    if results:
-        sys.exit(f'''{results}
-******************************
-You have tried to change system/sepolicy/public after vendor API freeze.
-To make these errors go away, you have two choices:
-    1. You can flag-guard types and attributes listed above, so they won't be
-       included to the release build. See examples of how to flag-guard them:
-           https://android-review.googlesource.com/2854391
-           https://android-review.googlesource.com/2967637
-    2. You can update prebuilts by executing the following command:
-           $ cd $ANDROID_BUILD_TOP
-           $ cp -r system/sepolicy/public system/sepolicy/private \\
-                 system/sepolicy/prebuilts/api/$(get_build_var BOARD_API_LEVEL)
-       To submit the revised prebuilts to the main Android repository,
-       you will need approval.
-******************************
-''')
+    if len(results) > 0:
+        sys.exit(results)
 
 if __name__ == '__main__':
     do_main()