kernel: fix redeclared __poll_t

* Probably useful in Ultra-Legacy kernel.

Signed-off-by: Faris <rissu.ntk@gmail.com>

kernel/file_wrapper.c

@@ -20,10 +20,6 @@
 
 #include "file_wrapper.h"
 
-#ifndef __poll_t
-typedef unsigned __bitwise __poll_t;
-#endif
-
 static loff_t mksu_wrapper_llseek(struct file *fp, loff_t off, int flags)
 {
 	struct ksu_file_wrapper *data = fp->private_data;