Remove unused coprocess test file
Remove unused coprocess test file

These tests were started, but never finished. They do nothing, so remove
them. They clutter the repository and the 'go test' output with false
PASSes.

Updates #334.

nebolsin/tyk,nebolsin/tyk,mvdan/tyk,lonelycode/tyk,nebolsin/tyk,nebolsin/tyk,lonelycode/tyk,nebolsin/tyk,mvdan/tyk,mvdan/tyk,nebolsin/tyk,mvdan/tyk,mvdan/tyk,nebolsin/tyk,nebolsin/tyk,lonelycode/tyk,mvdan/tyk,mvdan/tyk,mvdan/tyk