Revert "KIKIMR-20522: Tests for vdisks balancing (#531)"

This reverts commit 7116d46.

Author: Aleksandr Kriukov

ydb/core/blobstorage/ut_blobstorage/balancing.cpp

@@ -60,7 +60,6 @@ REQUIREMENTS(ram:32)
 END()
 
 RECURSE_FOR_TESTS(
-    ut_balancing
     ut_blob_depot
     ut_blob_depot_fat
     ut_donor

ydb/core/blobstorage/ut_blobstorage/ut_balancing/ya.make

@@ -161,7 +161,7 @@ class TTestActorSystem {
         }
 
         void StateFunc(TAutoPtr<IEventHandle>& ev) {
-            Y_ABORT_UNLESS(HandlePtr, "event %s is not being captured by this actor Tag# %s", ev->GetTypeName().data(), Tag.data());
+            Y_ABORT_UNLESS(HandlePtr, "event is not being captured by this actor Tag# %s", Tag.data());
             Y_ABORT_UNLESS(!*HandlePtr);
             HandlePtr->reset(ev.Release());
         }