prune uses of GO111MODULE=on

Author: joelanford

CONTRIBUTING.md

@@ -23,6 +23,6 @@ Please see https://git.k8s.io/community/CLA.md for more info
     ```
 1. Test
     ```bash
-    GO111MODULE=on TRACE=1 ./hack/check-everything.sh
+    TRACE=1 ./hack/check-everything.sh
     ```
 

hack/check-everything.sh

@@ -70,7 +70,7 @@ function fetch_go_tools {
   header_text "Checking for gometalinter.v2"
   if ! is_installed golangci-lint; then
     header_text "Installing golangci-lint"
-    GO111MODULE=on go get github.com/golangci/golangci-lint/cmd/[email protected]
+    go get github.com/golangci/golangci-lint/cmd/[email protected]
   fi
 
   header_text "Checking for dep"

hack/ci-check-everything.sh

@@ -16,7 +16,6 @@
 
 set -e
 
-export GO111MODULE=on
 export TRACE=1
 
 # Not included or existing by default in Prow