[#9999] writecache: Fix after revert

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

pkg/local_object_storage/writecache/cachebbolt.go

@@ -109,14 +109,14 @@ func (c *cache) Open(_ context.Context, mod mode.Mode) error {
 // Init runs necessary services.
 func (c *cache) Init(ctx context.Context) error {
 	c.metrics.SetMode(mode.ConvertToComponentModeDegraded(c.mode))
-	ctx, cancel := context.WithCancel(context.Background())
+	ctx, cancel := context.WithCancel(ctx)
 	c.cancel.Store(cancel)
 	c.runFlushLoop(ctx)
 	return nil
 }
 
 // Close closes db connection and stops services. Executes ObjectCounters.FlushAndClose op.
-func (c *cache) Close(ctx context.Context) error {
+func (c *cache) Close(_ context.Context) error {
 	if cancelValue := c.cancel.Swap(dummyCanceler); cancelValue != nil {
 		cancelValue.(context.CancelFunc)()
 	}
@@ -133,7 +133,7 @@ func (c *cache) Close(ctx context.Context) error {
 
 	var err error
 	if c.db != nil {
-		err = c.db.Close(ctx)
+		err = c.db.Close()
 		if err != nil {
 			c.db = nil
 		}