Remove process

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

container.go

@@ -4,7 +4,6 @@ type Container interface {
 	ID() string
 	Start() error
 	Pid() (int, error)
-	//	Process() Process
 	SetExited(status int)
 	Delete() error
 }

process.go

@@ -1,6 +0,0 @@
-package containerd
-
-type Process interface {
-	// Signal sends a signal to the process.
-	SetExited(status int)
-}