Stop wrapping http error

The error message provides no extra value, the original error provides
plenty of detail for example:

  Post "http://service.name:80/query": dial tcp 172.1.2.3:80: connect: connection refused

client.go

@@ -162,13 +162,8 @@ func (c *GraphQLClient) Request(ctx context.Context, url string, request *Reques
 			promServiceTimeoutErrorCounter.With(prometheus.Labels{
 				"service": url,
 			}).Inc()
-
-			// Return raw timeout error to allow caller to handle it since a
-			// downstream caller may want to retry, and they will have to jump
-			// through hoops to detect this error otherwise.
-			return traceErr(err)
 		}
-		return traceErr(fmt.Errorf("error during request: %w", err))
+		return traceErr(err)
 	}
 	defer res.Body.Close()
 

docs/plugins.md

@@ -121,7 +121,7 @@ e.g.
 ```json
 {
   "errors": {
-    "message": "error during request: Post \"http://localhost:8080/query\": context deadline exceeded",
+    "message": "Post \"http://localhost:8080/query\": context deadline exceeded",
      "extensions": {
         "selectionSet": "{ serviceB _bramble_id: id }"
       },