Remove `go build` flags
Remove `go build` flags

PiperOrigin-RevId: 305678631
Change-Id: I991fd95646b5594bb2f5b5a9e9967ec055772ae4

GoogleCloudPlatform/buildpacks,GoogleCloudPlatform/buildpacks,GoogleCloudPlatform/buildpacks,GoogleCloudPlatform/buildpacks