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: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/fhci-dbg.c

@@ -129,11 +129,7 @@ void fhci_dfs_destroy(struct fhci_hcd *fhci)
 	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);
 }