remove arschles/gogenerate, ref #1181

Comment of maintainer:
https://github.com/avelino/awesome-go/issues/1181#issuecomment-261002875

README.md

@@ -904,7 +904,6 @@ See [go-hardware](https://github.com/rakyll/go-hardware) for a comprehensive lis
 * Fuzzing and delta-debugging/reducing/shrinking
     * [go-fuzz](https://github.com/dvyukov/go-fuzz) - A randomized testing system
     * [gofuzz](https://github.com/google/gofuzz) - A library for populating go objects with random values
-    * [gogenerate](https://github.com/arschles/gogenerate) - A Scalacheck-like library for Go
     * [Tavor](https://github.com/zimmski/tavor) - A generic fuzzing and delta-debugging framework
 
 ## Text Processing