diff --git a/hack/lib/golang.sh b/hack/lib/golang.sh
index 527a0b8d523..b07beef927f 100755
--- a/hack/lib/golang.sh
+++ b/hack/lib/golang.sh
@@ -496,9 +496,6 @@ EOF
 # ${PATH}. It will also check that the Go version is good enough for the
 # Kubernetes build.
 #
-# Inputs:
-#   KUBE_EXTRA_GOPATH - If set, this is included in created GOPATH
-#
 # Outputs:
 #   env-var GOPATH points to our local output dir
 #   env-var GOBIN is unset (we want binaries in a predictable place)
@@ -512,11 +509,6 @@ kube::golang::setup_env() {
   export GOPATH="${KUBE_GOPATH}"
   export GOCACHE="${KUBE_GOPATH}/cache"
 
-  # Append KUBE_EXTRA_GOPATH to the GOPATH if it is defined.
-  if [[ -n ${KUBE_EXTRA_GOPATH:-} ]]; then
-    GOPATH="${GOPATH}:${KUBE_EXTRA_GOPATH}"
-  fi
-
   # Make sure our own Go binaries are in PATH.
   export PATH="${KUBE_GOPATH}/bin:${PATH}"
 
diff --git a/test/instrumentation/stability-utils.sh b/test/instrumentation/stability-utils.sh
index 7769d6daf4a..4b158950a19 100644
--- a/test/instrumentation/stability-utils.sh
+++ b/test/instrumentation/stability-utils.sh
@@ -26,13 +26,7 @@ stability_check_setup() {
   kube::golang::verify_go_version
   kube::util::ensure-temp-dir
   cd "${KUBE_ROOT}"
-  export KUBE_EXTRA_GOPATH=$KUBE_TEMP
   kube::golang::setup_env
-  pushd "${KUBE_EXTRA_GOPATH}" >/dev/null
-    touch go.mod
-    GO111MODULE=on go mod edit -module=example.com/mod
-    GO111MODULE=on go get "gopkg.in/yaml.v2"
-  popd >/dev/null
 }
 
 find_files_to_check() {