hst: remove enablement json adapter

The go116 behaviour of built-in new function makes this cleaner.

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

internal/system/dispatcher.go

@@ -21,12 +21,16 @@ type osFile interface {
 	fs.File
 }
 
-// syscallDispatcher provides methods that make state-dependent system calls as part of their behaviour.
+// syscallDispatcher provides methods that make state-dependent system calls as
+// part of their behaviour.
+//
 // syscallDispatcher is embedded in [I], so all methods must be unexported.
 type syscallDispatcher interface {
 	// new starts a goroutine with a new instance of syscallDispatcher.
-	// A syscallDispatcher must never be used in any goroutine other than the one owning it,
-	// just synchronising access is not enough, as this is for test instrumentation.
+	//
+	// A syscallDispatcher must never be used in any goroutine other than the
+	// one owning it, just synchronising access is not enough, as this is for
+	// test instrumentation.
 	new(f func(k syscallDispatcher))
 
 	// stat provides os.Stat.