tick/nohz: Remove superflous check for CONFIG_VIRT_CPU_ACCOUNTING_NATIVE

The vtime_accounting_enabled_this_cpu() early check already makes what
follows as dead code in the case of CONFIG_VIRT_CPU_ACCOUNTING_NATIVE.
No need to keep the ifdeferry around.
Signed-off-by: NFrederic Weisbecker <frederic@kernel.org>
Signed-off-by: NIngo Molnar <mingo@kernel.org>
Acked-by: NPeter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210512232924.150322-4-frederic@kernel.org

kernel/time/tick-sched.c

@@ -1196,7 +1196,6 @@ unsigned long tick_nohz_get_idle_calls(void)
 
 static void tick_nohz_account_idle_ticks(struct tick_sched *ts)
 {
-#ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
 	unsigned long ticks;
 
 	if (vtime_accounting_enabled_this_cpu())
@@ -1212,7 +1211,6 @@ static void tick_nohz_account_idle_ticks(struct tick_sched *ts)
 	 */
 	if (ticks && ticks < LONG_MAX)
 		account_idle_ticks(ticks);
-#endif
 }
 
 void tick_nohz_idle_restart_tick(void)