Revert "sanitizers: increase .clang-format columns to 100"

This reverts commit 5d1df6d2.

There is a strong objection to this change:
https://reviews.llvm.org/D106436#2905618

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D106847

(cherry picked from commit 440e936c)