nios2: asm-offsets: Remove unused definition TI_TASK

TI_TASK is not used in nios2 assembly code, so remove it.
Signed-off-by: NTobias Klauser <tklauser@distanz.ch>
Acked-by: NLey Foon Tan <lftan@altera.com>

arch/nios2/kernel/asm-offsets.c

@@ -79,7 +79,6 @@ int main(void)
 	BLANK();
 
 	/* struct thread_info */
-	OFFSET(TI_TASK, thread_info, task);
 	OFFSET(TI_FLAGS, thread_info, flags);
 	OFFSET(TI_PREEMPT_COUNT, thread_info, preempt_count);
 	BLANK();