Drop the vendor mode in the OCI tool makefile

The OCI tool makefile attempts to use the vendor folder for the
build, but there is not vendor folder, so removing that.

Signed-off-by: Andrea Frittoli <andrea.frittoli@gmail.com>

oci/Makefile

@@ -19,26 +19,26 @@ cross: amd64 386 arm arm64 ## build cross platform binaries
 
 .PHONY: amd64
 amd64:
-	GOOS=linux GOARCH=amd64 go build -mod=vendor $(LDFLAGS) -o bin/oci-linux-amd64 ./cmd/oci
-	GOOS=windows GOARCH=amd64 go build -mod=vendor $(LDFLAGS) -o bin/oci-windows-amd64 ./cmd/oci
-	GOOS=darwin GOARCH=amd64 go build -mod=vendor $(LDFLAGS) -o bin/oci-darwin-amd64 ./cmd/oci
+	GOOS=linux GOARCH=amd64 go build $(LDFLAGS) -o bin/oci-linux-amd64 ./cmd/oci
+	GOOS=windows GOARCH=amd64 go build $(LDFLAGS) -o bin/oci-windows-amd64 ./cmd/oci
+	GOOS=darwin GOARCH=amd64 go build $(LDFLAGS) -o bin/oci-darwin-amd64 ./cmd/oci
 
 .PHONY: 386
 386:
-	GOOS=linux GOARCH=386 go build -mod=vendor $(LDFLAGS) -o bin/oci-linux-386 ./cmd/oci
-	GOOS=windows GOARCH=386 go build -mod=vendor $(LDFLAGS) -o bin/oci-windows-386 ./cmd/oci
-	GOOS=darwin GOARCH=386 go build -mod=vendor $(LDFLAGS) -o bin/oci-darwin-386 ./cmd/oci
+	GOOS=linux GOARCH=386 go build $(LDFLAGS) -o bin/oci-linux-386 ./cmd/oci
+	GOOS=windows GOARCH=386 go build $(LDFLAGS) -o bin/oci-windows-386 ./cmd/oci
+	GOOS=darwin GOARCH=386 go build $(LDFLAGS) -o bin/oci-darwin-386 ./cmd/oci
 
 .PHONY: arm
 arm:
-	GOOS=linux GOARCH=arm go build -mod=vendor $(LDFLAGS) -o bin/oci-linux-arm ./cmd/oci
+	GOOS=linux GOARCH=arm go build $(LDFLAGS) -o bin/oci-linux-arm ./cmd/oci
 
 .PHONY: arm64
 arm64:
-	GOOS=linux GOARCH=arm64 go build -mod=vendor $(LDFLAGS) -o bin/oci-linux-arm64 ./cmd/oci
+	GOOS=linux GOARCH=arm64 go build $(LDFLAGS) -o bin/oci-linux-arm64 ./cmd/oci
 
 bin/%: cmd/% vendor FORCE
-	go build -mod=vendor $(LDFLAGS) -v -o $@ ./$<
+	go build $(LDFLAGS) -v -o $@ ./$<
 
 check: lint test