Input: edt-ft5x06 - remove unnecessary null test

Fix checkpatch warning:
"WARNING: debugfs_remove_recursive(NULL) is safe this check is probably not required"

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index d4f3399..5a6d50c 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -733,8 +733,7 @@
 static void
 edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata)
 {
-	if (tsdata->debug_dir)
-		debugfs_remove_recursive(tsdata->debug_dir);
+	debugfs_remove_recursive(tsdata->debug_dir);
 	kfree(tsdata->raw_buffer);
 }