Revert "rcu: Add tracing data to support queueing models"

This reverts commit 9c9b77f405048f58679eb4768deb943738e1146a.
Revert "rcu: fix sparse errors in rcutorture.c"

This reverts commit d05cfe59fb96dc31aa6a3a8ef57747cb22be3a69.
Revert "rcu: performance fixes to TINY_PREEMPT_RCU callback checking"

This reverts commit 620cd605db830b0647972415b080b02aeeb7d2be.