system: update doc commands and remove mutex

The mutex is not really doing anything, none of these methods make sense when called concurrently anyway. The copylocks analysis is still satisfied by the noCopy struct.

Signed-off-by: Ophestra <cat@gensokyo.uk>

system/enablement.go

@@ -5,7 +5,7 @@ import (
 	"strings"
 )
 
-// Enablement represents optional system resources.
+// Enablement represents an optional host service to export to the target user.
 type Enablement byte
 
 const (