drivers/usb/host/fhci-dbg.c: remove unnecessary null test before debugfs_remove

This fixes checkpatch warning:
"WARNING: debugfs_remove(NULL) is safe this check is probably not required"

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/host/fhci-dbg.c b/drivers/usb/host/fhci-dbg.c
index f238cb3..b58e7a6 100644
--- a/drivers/usb/host/fhci-dbg.c
+++ b/drivers/usb/host/fhci-dbg.c
@@ -129,11 +129,7 @@
 	if (!fhci->dfs_root)
 		return;
 
-	if (fhci->dfs_irq_stat)
-		debugfs_remove(fhci->dfs_irq_stat);
-
-	if (fhci->dfs_regs)
-		debugfs_remove(fhci->dfs_regs);
-
+	debugfs_remove(fhci->dfs_irq_stat);
+	debugfs_remove(fhci->dfs_regs);
 	debugfs_remove(fhci->dfs_root);
 }