revert fetch-cargo-deps change

-3
-3
pkgs/build-support/rust/fetch-cargo-deps
··· 43 # Do any possible 'cargo update -p <pkgName> --precise <version>' ad-hoc updates 44 eval "$cargoUpdateHook" 45 46 - # stdenv setup sets SSL_CERT_FILE to a nonexistent path; cargo doesn't like that 47 - unset SSL_CERT_FILE 48 - 49 # Do the fetch 50 cargo fetch --verbose 51
··· 43 # Do any possible 'cargo update -p <pkgName> --precise <version>' ad-hoc updates 44 eval "$cargoUpdateHook" 45 46 # Do the fetch 47 cargo fetch --verbose 48