Revert "add bidirectional streaming support for external snapshot streaming" (#274)

This reverts commit 3290110.

Author: shivaji-kharse

.trunk/trunk.yaml

@@ -15,7 +15,7 @@ plugins:
 # Many linters and tools depend on runtimes - configure them here. (https://docs.trunk.io/runtimes)
 runtimes:
   enabled:
-    - go@1.24.1
+    - go@1.25.0
     - node@18.20.5
     - python@3.10.8
 

protos/api.v2.proto

@@ -31,7 +31,7 @@ service Dgraph {
   rpc ListNamespaces(ListNamespacesRequest) returns (ListNamespacesResponse) {}
 
   rpc UpdateExtSnapshotStreamingState(UpdateExtSnapshotStreamingStateRequest) returns (UpdateExtSnapshotStreamingStateResponse) {}
-  rpc StreamExtSnapshot(stream StreamExtSnapshotRequest) returns (stream StreamExtSnapshotResponse) {}
+  rpc StreamExtSnapshot(stream StreamExtSnapshotRequest) returns (StreamExtSnapshotResponse) {}
 }
 
 message PingRequest {}
@@ -178,9 +178,7 @@ message StreamExtSnapshotRequest {
   StreamPacket pkt = 3;
 }
 
-message StreamExtSnapshotResponse {
-  bool finish = 1;
-}
+message StreamExtSnapshotResponse {}
 
 message StreamPacket {
   bytes data = 1;