mce, workqueue: remove keventd_up() usage

Now that workqueue can handle work item queueing from very early
during boot, there is no need to gate schedule_work() with
keventd_up().  Remove it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: linux-edac@vger.kernel.org

arch/x86/kernel/cpu/mcheck/mce.c

@@ -491,7 +491,7 @@ int mce_available(struct cpuinfo_x86 *c)
 
 static void mce_schedule_work(void)
 {
-	if (!mce_gen_pool_empty() && keventd_up())
+	if (!mce_gen_pool_empty())
 		schedule_work(&mce_work);
 }