tsan: don't instrument runtime callbacks in tests

These runtime callbacks are supposed to be non-instrumented,
we can't handle runtime recursion well, nor can we afford
explicit recursion checks in the hot functions (memory access,
function entry/exit).
It used to work (not crash), but it won't work with the new runtime.
Mark all runtime callbacks as non-instrumented.

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D111157