SERVER-51762 Delete code for old unique index format

This refactor makes the following improvements:
- Deletes dead code that allows multiple RecordIds to coexist for the old unique
  index format
- Deletes the obselete "trigger write conflict" code that applied to
  background indexes and has been superseded by hybrid indexes
- Factors out three distinct implementations of indexes for WiredTiger:
  WiredTigerIndexStandard (non-unique indexes), WiredTigerIdIndex (_id
  index), and WiredTigerIndexUnique (non-_id unique indexes)
- API modernization for the SortedDataInterface::BulkBuilder

1 files changed, 0 insertions, 10 deletions

diff --git a/src/mongo/db/catalog/multi_index_block.cpp b/src/mongo/db/catalog/multi_index_block.cpp
index c145eaf635e..11d3304d0f3 100644
--- a/src/mongo/db/catalog/multi_index_block.cpp
+++ b/src/mongo/db/catalog/multi_index_block.cpp
@@ -1161,10 +1161,6 @@ Status MultiIndexBlock::_scanReferenceIdxInsertAndCommit(OperationContext* opCtx
               "Reference index is empty.",
               "refIdx"_attr = refIdx->descriptor()->indexName());
         _phase = IndexBuildPhaseEnum::kBulkLoad;
-        WriteUnitOfWork wuow(opCtx);
-        // Allow the commit operation to be interruptible:
-        bulkLoader->commit(true);
-        wuow.commit();
         return Status::OK();
     }
 
@@ -1206,12 +1202,6 @@ Status MultiIndexBlock::_scanReferenceIdxInsertAndCommit(OperationContext* opCtx
     }
 
     _phase = IndexBuildPhaseEnum::kBulkLoad;
-
-    WriteUnitOfWork wuow(opCtx);
-    // Allow the commit operation to be interruptible:
-    bulkLoader->commit(true);
-    wuow.commit();
-
     return Status::OK();
 }