remove allowRemoteGetBatch from SaplingBackingStore getBlobAux

Summary:
## Background
We decided to get back to the previous path of sending request with allow remote mode.
The config is removed on D66784942
This stack is cleaning up the code branches in `SaplingBackingStore`
I split it into multiple diffs to make it easier for review

## This diff
Remove `allowRemoteGetBatch` config from getBlobAux

Reviewed By: MichaelCuevas

Differential Revision: D67105090

fbshipit-source-id: f9304d4abb7150503ff8d8f7056f6c131f2b868b

eden/fs/store/hg/SaplingBackingStore.cpp

@@ -973,48 +973,12 @@ void SaplingBackingStore::processBlobAuxImportRequests(
     XLOGF(DBG4, "Processing blob aux request for {}", blobAuxImport->hash);
   }
 
-  std::vector<std::shared_ptr<SaplingImportRequest>> retryRequest;
-  retryRequest.reserve(requests.size());
-  if (config_->getEdenConfig()->allowRemoteGetBatch.getValue()) {
-    getBlobAuxDataBatch(requests, sapling::FetchMode::AllowRemote);
-    retryRequest = std::move(requests);
-  } else {
-    getBlobAuxDataBatch(requests, sapling::FetchMode::LocalOnly);
-    for (auto& request : requests) {
-      auto* promise = request->getPromise<BlobAuxDataPtr>();
-      if (promise->isFulfilled()) {
-        XLOGF(
-            DBG4,
-            "BlobAuxData found in Sapling local for {}",
-            request->getRequest<SaplingImportRequest::BlobAuxImport>()->hash);
-        request->getContext()->setFetchedSource(
-            ObjectFetchContext::FetchedSource::Local,
-            ObjectFetchContext::ObjectType::BlobAuxData,
-            stats_.copy());
-        stats_->addDuration(
-            &SaplingBackingStoreStats::fetchBlobAuxData, watch.elapsed());
-        stats_->increment(&SaplingBackingStoreStats::fetchBlobAuxDataSuccess);
-      } else {
-        retryRequest.emplace_back(std::move(request));
-      }
-    }
-    getBlobAuxDataBatch(retryRequest, sapling::FetchMode::RemoteOnly);
-  }
+  getBlobAuxDataBatch(requests, sapling::FetchMode::AllowRemote);
 
   {
-    for (auto& request : retryRequest) {
+    for (auto& request : requests) {
       auto* promise = request->getPromise<BlobAuxDataPtr>();
       if (promise->isFulfilled()) {
-        if (!config_->getEdenConfig()->allowRemoteGetBatch.getValue()) {
-          XLOGF(
-              DBG4,
-              "BlobAuxData found in Sapling remote for {}",
-              request->getRequest<SaplingImportRequest::BlobAuxImport>()->hash);
-          request->getContext()->setFetchedSource(
-              ObjectFetchContext::FetchedSource::Remote,
-              ObjectFetchContext::ObjectType::BlobAuxData,
-              stats_.copy());
-        }
         stats_->addDuration(
             &SaplingBackingStoreStats::fetchBlobAuxData, watch.elapsed());
         stats_->increment(&SaplingBackingStoreStats::fetchBlobAuxDataSuccess);