pkg/parsers/kernel: remove duplicate Package godoc

It was present both in kernel.go and kernel_unix.go.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

pkg/parsers/kernel/kernel_unix.go

@@ -1,8 +1,6 @@
 //go:build linux || freebsd || openbsd
 // +build linux freebsd openbsd
 
-// Package kernel provides helper function to get, parse and compare kernel
-// versions for different platforms.
 package kernel // import "github.com/docker/docker/pkg/parsers/kernel"
 
 import (