TBR: Revert "tools/lib/testutil: add "-short" to "go test" command in presubmit."
TBR: Revert "tools/lib/testutil: add "-short" to "go test" command in presubmit."

This reverts commit 6af0a90eb71e11ddc63593f915348e1dc69591bb.

Change-Id: I994b15b0bd1d615159d9a119fb0bd7cc019906ec

vanadium/go.devtools,vanadium/go.devtools,vanadium/go.devtools