Remove all locking code

Since the Go runtime is not yet setup there is no support for
spinlocking if a lock cannot be acquired. This makes the locking code
useless for now.

kernel/driver/video/console/console.go

@@ -1,7 +1,5 @@
 package console
 
-import "sync"
-
 // Attr defines a color attribute.
 type Attr uint16
 
@@ -36,8 +34,6 @@ const (
 
 // The Console interface is implemented by objects that can function as physical consoles.
 type Console interface {
-	sync.Locker
-
 	// Dimensions returns the width and height of the console in characters.
 	Dimensions() (uint16, uint16)
 

kernel/driver/video/console/ega.go

@@ -2,7 +2,6 @@ package console
 
 import (
 	"reflect"
-	"sync"
 	"unsafe"
 )
 
@@ -16,8 +15,6 @@ const (
 // allocator, each console will use its own framebuffer while the active console
 // will periodically sync its internal buffer with the physical screen buffer.
 type Ega struct {
-	sync.Mutex
-
 	width  uint16
 	height uint16