go vet is embedded in Go after v1.6

Author: hemendra619

testdata/Makefile

@@ -1,7 +1,7 @@
 FILES:=$(wildcard out/*.go)
 
 .PHONY: check
-check: errcheck vet golint $(FILES:.go=.checked)
+check: errcheck golint $(FILES:.go=.checked)
 
 out/%.checked: out/%.go
 	errcheck $<
@@ -30,8 +30,5 @@ out/nocompress-nomemcopy.go: $(wildcard in/**/*) $(GOPATH)/bin/go-bindata
 errcheck:
 	go get github.com/kisielk/errcheck
 
-vet:
-	go get golang.org/x/tools/cmd/vet
-
 golint:
 	go get github.com/golang/lint/golint