[FAB-12599] Remove unused variable in peer code
[FAB-12599] Remove unused variable in peer code

orderingEndpoint is used nowhere in the code

Change-Id: I56db43d3e76e2ccb5d03895045f7c1f90fcac7d5
Signed-off-by: Hui Kang <06099befa36bf5a07a5196d8e1177abdf1d958ba@us.ibm.com>

jimthematrix/fabric,manish-sethi/fabric-sidedb,manish-sethi/fabric-sidedb,binhn/fabric,manish-sethi/fabric-sidedb,binhn/fabric,manish-sethi/fabric-sidedb,xixuejia/fabric,stemlending/fabric,stemlending/fabric,manish-sethi/fabric,xixuejia/fabric,hyperledger/fabric,binhn/fabric,muralisrini/fabric,hyperledger/fabric,stemlending/fabric,manish-sethi/fabric,muralisrini/fabric,manish-sethi/fabric-sidedb,jimthematrix/fabric,manish-sethi/fabric-sidedb,stemlending/fabric,manish-sethi/fabric-sidedb,muralisrini/fabric,xixuejia/fabric