Remove throttling bug notes

doc/api.markdown

@@ -1806,9 +1806,6 @@ authentication details.
 This object is created internally by a HTTP server--not by the user. It is
 passed as the second parameter to the `'request'` event. It is a writable stream.
 
-BUG: `http.ServerResponse` does not yet implement all the throttling
-mechanisms of writable streams. In particiular the return value of `write()`
-is not in line with the interface and it does not emit a `drain` event.
 
 ### response.writeHead(statusCode[, reasonPhrase] , headers)
 
@@ -1956,10 +1953,6 @@ event, the entire body will be caught.
 
 This is a writable stream.
 
-BUG: `http.ClientRequest` does not yet implement all the throttling
-mechanisms of writable streams. In particiular the return value of `write()`
-is not in line with the interface and it does not emit a `drain` event.
-
 This is an `EventEmitter` with the following events:
 
 ### Event 'response'