fix: removes error code checks for bitswap offline tests
fix: removes error code checks for bitswap offline tests

When run in the browser with js-ipfs-api against a stopped go-ipfs there is no error code, just a "Failed to fetch" message from the browser fetch API. The error `code` is specific to Node.js so this check has been removed.

License: MIT
Signed-off-by: Alan Shaw <91e38e63b890fbb214c8914809fde03c73e7f24d@tableflip.io>

ipfs/interface-ipfs-core