remove installing ginkgo using "go get" as it ginkgo version supported

is 2.0

test/build.sh

@@ -66,9 +66,6 @@ function get-version() {
 function install-lib() {
   apt-get update
   apt-get install -y libsystemd-dev gcc-aarch64-linux-gnu
-  # Turn off go modules here, because we are not trying to install
-  # ginkgo library/module. We are trying to install the ginkgo executable.
-  GO111MODULE=off go get -v github.com/onsi/ginkgo/ginkgo
 }
 
 function write-env-file() {