Re-enable libsnapshot ImageManagerTest am: c723fca056 am: 37645974cc

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/core/+/12337395

Change-Id: Ia5dcd0368b3f8ed31fa94e298eb9c53661690d75
diff --git a/fs_mgr/libsnapshot/snapshot_test.cpp b/fs_mgr/libsnapshot/snapshot_test.cpp
index 9ca2412..cac2f8f 100644
--- a/fs_mgr/libsnapshot/snapshot_test.cpp
+++ b/fs_mgr/libsnapshot/snapshot_test.cpp
@@ -1799,7 +1799,6 @@
   protected:
     void SetUp() override {
         if (!is_virtual_ab_) GTEST_SKIP() << "Test for Virtual A/B devices only";
-        GTEST_SKIP() << "WIP failure b/149738928";
 
         SnapshotTest::SetUp();
         userdata_ = std::make_unique<LowSpaceUserdata>();