riscv: Remove unused TASK_TI_FLAGS

Since commit f0bddf5 ("riscv: entry: Convert to generic
entry"), TASK_TI_FLAGS is not used any more, so remove it.

Fixes: f0bddf5 ("riscv: entry: Convert to generic entry")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
Link: https://lore.kernel.org/r/20241109014605.2801492-1-ruanjinjie@huawei.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>

arch/riscv/kernel/asm-offsets.c

@@ -36,7 +36,6 @@ void asm_offsets(void)
 	OFFSET(TASK_THREAD_S11, task_struct, thread.s[11]);
 
 	OFFSET(TASK_TI_CPU, task_struct, thread_info.cpu);
-	OFFSET(TASK_TI_FLAGS, task_struct, thread_info.flags);
 	OFFSET(TASK_TI_PREEMPT_COUNT, task_struct, thread_info.preempt_count);
 	OFFSET(TASK_TI_KERNEL_SP, task_struct, thread_info.kernel_sp);
 	OFFSET(TASK_TI_USER_SP, task_struct, thread_info.user_sp);