task: ignore paused status while calculating dynamic thread count

bees might be unpaused at any time, so make sure that the dynamic load
calculation is ready with a non-zero thread count.

This avoids a delay of up to 5 seconds when responding to SIGUSR2
when loadavg tracking is enabled.

Signed-off-by: Zygo Blaxell <bees@furryterror.org>

lib/task.cc

@@ -530,11 +530,6 @@ namespace crucible {
 	size_t
 	TaskMasterState::calculate_thread_count_nolock()
 	{
-		if (m_paused) {
-			// No threads running while paused or cancelled
-			return 0;
-		}
-
 		if (m_load_target == 0) {
 			// No limits, no stats, use configured thread count
 			return m_configured_thread_max;