FAB-14849 Remove USER from buildenv
FAB-14849 Remove USER from buildenv

There's no need for running buildenv
image as a different user so removing.

FAB-14849 #done

Change-Id: Icd1d689a495b8e06cc8f0373991361e042ee4c0d
Signed-off-by: Gari Singh <10008a422f4be611b73174084ba2f7f909d5b402@gmail.com>

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