[docs][pp-trace] Remove FileNotFound callback
authorCHIANG, YU-HSUN (Tommy Chiang, oToToT) <ty1208chiang@gmail.com>
Mon, 9 May 2022 19:10:58 +0000 (03:10 +0800)
committerCHIANG, YU-HSUN (Tommy Chiang, oToToT) <ty1208chiang@gmail.com>
Wed, 11 May 2022 10:14:25 +0000 (18:14 +0800)
commitba7b6f46b37b1926552e96bd102b995f6d36de04
treeb2a9a8e55b9554c45291610fc784e87b57298b27
parentc1bb4a881efe7d15083fd9a453c82d92ad663878
[docs][pp-trace] Remove FileNotFound callback

`FileNotFound` preprocessor callback is removed in D119708.
We should also remove it from the documentation.

Reviewed by: jansvoboda11

Differential Revision: https://reviews.llvm.org/D125258
clang-tools-extra/docs/pp-trace.rst