[FAB-2367] Remove unused orderer yaml parameters

https://jira.hyperledger.org/browse/FAB-2367

The orderer.yaml file contains a QueueSize and WindowSize parameter
which invites people to tweak these parameters to attempt to optimize
performance.  However, they no longer have any effect on the system and
the only place they are referenced is in the config.

This CR removes them.

Change-Id: Ida695c94d447b93a177786506579830575c49a79
Signed-off-by: Jason Yellick <jyellick@us.ibm.com>

orderer/localconfig/config.go

@@ -42,8 +42,6 @@ const Prefix string = "ORDERER"
 // General contains config which should be common among all orderer types
 type General struct {
 	LedgerType     string
-	QueueSize      uint32
-	MaxWindowSize  uint32
 	ListenAddress  string
 	ListenPort     uint16
 	TLS            TLS
@@ -145,8 +143,6 @@ type TopLevel struct {
 var defaults = TopLevel{
 	General: General{
 		LedgerType:     "ram",
-		QueueSize:      1000,
-		MaxWindowSize:  1000,
 		ListenAddress:  "127.0.0.1",
 		ListenPort:     7050,
 		GenesisMethod:  "provisional",
@@ -202,12 +198,6 @@ func (c *TopLevel) completeInitialization() {
 		case c.General.LedgerType == "":
 			logger.Infof("General.LedgerType unset, setting to %s", defaults.General.LedgerType)
 			c.General.LedgerType = defaults.General.LedgerType
-		case c.General.QueueSize == 0:
-			logger.Infof("General.QueueSize unset, setting to %s", defaults.General.QueueSize)
-			c.General.QueueSize = defaults.General.QueueSize
-		case c.General.MaxWindowSize == 0:
-			logger.Infof("General.MaxWindowSize unset, setting to %s", defaults.General.MaxWindowSize)
-			c.General.MaxWindowSize = defaults.General.MaxWindowSize
 		case c.General.ListenAddress == "":
 			logger.Infof("General.ListenAddress unset, setting to %s", defaults.General.ListenAddress)
 			c.General.ListenAddress = defaults.General.ListenAddress

orderer/orderer.yaml

@@ -13,14 +13,6 @@ General:
     # Available types are "ram", "file".
     LedgerType: ram
 
-    # Queue Size: The maximum number of messages to allow pending from a gRPC
-    # client.
-    QueueSize: 10
-
-    # Max Window Size: The maximum number of messages to for the orderer Deliver
-    # to allow before acknowledgement must be received from the client.
-    MaxWindowSize: 1000
-
     # Listen address: The IP on which to bind to listen
     ListenAddress: 127.0.0.1