drop the transport from a location key

[nepinhum]

What this changes

Fixes #3

How it was checked

v fmt -w .
v (optional: -old-compiler) test .
v (optional: -old-compiler) -prod -o gitlife .

Build with the stable V release, 0.5.2. v fmt on V master is frequently broken
and will rewrite code it should have left alone, so format with a stable
toolchain if you have one and say which V you used above if you do not.

Checklist

• v fmt -w . ran before the build and the build is clean with -prod
• Tests pass, and anything touching config, state or cache runs against a disposable GITLIFE_*_DIR
• A module nothing imports yet was checked on its own with v -old-compiler -shared -check <module>/
• A new module carries a README.md
• No token reaches a stored remote URL, SQLite or git's stderr