update prom remote write for bulk timers

Also do some cleanup of stuff we don't need.

Signed-off-by: Matt Klein <[email protected]>

thirdparty/prometheus/prompb/remote.proto

@@ -14,17 +14,14 @@
 syntax = "proto3";
 package prometheus;
 
-option go_package = "prompb";
-
 import "prometheus/prompb/types.proto";
-import "gogoproto/gogo.proto";
 
 message WriteRequest {
-  repeated prometheus.TimeSeries timeseries = 1 [(gogoproto.nullable) = false];
+  repeated prometheus.TimeSeries timeseries = 1;
   // Cortex uses this field to determine the source of the write request.
   // We reserve it to avoid any compatibility issues.
   reserved  2;
-  repeated prometheus.MetricMetadata metadata = 3 [(gogoproto.nullable) = false];
+  repeated prometheus.MetricMetadata metadata = 3;
 
   // Added as an extension, this field allows us to forward statsd PDUs that fail to parse.
   repeated string failthrough_statsd_lines = 17;
@@ -86,4 +83,4 @@ message ChunkedReadResponse {
 
   // query_index represents an index of the query from ReadRequest.queries these chunks relates to.
   int64 query_index = 2;
-}
+}