remove unused GetBytesSent function from flow controller

flowcontrol/flow_control_manager.go

@@ -91,17 +91,6 @@ func (f *flowControlManager) ResetStream(streamID protocol.StreamID, byteOffset
 	return nil
 }
 
-func (f *flowControlManager) GetBytesSent(streamID protocol.StreamID) (protocol.ByteCount, error) {
-	f.mutex.Lock()
-	defer f.mutex.Unlock()
-
-	fc, err := f.getFlowController(streamID)
-	if err != nil {
-		return 0, err
-	}
-	return fc.GetBytesSent(), nil
-}
-
 // UpdateHighestReceived updates the highest received byte offset for a stream
 // it adds the number of additional bytes to connection level flow control
 // streamID must not be 0 here

flowcontrol/flow_controller.go

@@ -66,10 +66,6 @@ func (c *flowController) AddBytesSent(n protocol.ByteCount) {
 	c.bytesSent += n
 }
 
-func (c *flowController) GetBytesSent() protocol.ByteCount {
-	return c.bytesSent
-}
-
 // UpdateSendWindow should be called after receiving a WindowUpdateFrame
 // it returns true if the window was actually updated
 func (c *flowController) UpdateSendWindow(newOffset protocol.ByteCount) bool {

flowcontrol/flow_controller_test.go

@@ -118,11 +118,6 @@ var _ = Describe("Flow controller", func() {
 			Expect(controller.bytesSent).To(Equal(protocol.ByteCount(5 + 6)))
 		})
 
-		It("gets the bytesSent", func() {
-			controller.bytesSent = 8
-			Expect(controller.GetBytesSent()).To(Equal(protocol.ByteCount(8)))
-		})
-
 		It("gets the size of the remaining flow control window", func() {
 			controller.bytesSent = 5
 			controller.sendWindow = 12