Adjust Makefile to run with vendored deps

The test target will fail if any deps are not vendored.

Thus, dropping the check target (which was not used).

Author: hsanjuan

Makefile

@@ -1,17 +1,14 @@
 GO111MODULE = on
 
-check:
-	@echo "verifying that we have no external dependencies"
-	@test "$$(go list -m all)" = "github.com/ipfs/fs-repo-migrations"
-
 install:
-	go install
+	go install -mod=vendor
 	@echo "fs-repo-migrations now installed, type 'fs-repo-migrations' to run"
 
 test: test_go sharness
 
 test_go:
-	go test ./ipfs-5-to-6/... ./ipfs-7-to-8/... # go test ./... fails see #66
+	go build -mod=vendor
+	go test -mod=vendor  ./...
 
 sharness:
 	make -C sharness