Revert "softirq: keep the 'softirq pending' check RT-only"

This reverts commit 5536f5491a2e098ba34995662dfc0e82d66d65c9.

Sebastian says that the stable commits:

 0a0e0829 ("nohz: Fix missing tick reprogram when interrupting an inline softirq")
 80d20d35 ("nohz: Fix local_timer_softirq_pending()")

Make this commit obsolete, thus it should be reverted.

Link: http://lkml.kernel.org/r/20180906193028.jvyp2dj3rto4ax7s@linutronix.de



Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>