Revert "Merge pull request #11 from hailocab/pin-go-snappystream"

This reverts commit 936206ab13d5cf642f8fc7714bf419a7b5af59d5, reversing
changes made to aac14372a7d6ca15865bd1ab29e55d8115a06deb.
Merge pull request #12 from hailocab/unpin-go-snappystream

Unpin from our fork of go-snappystream