Stop suppressing crc_fold512_to_32 in msan builds.

This seems to work now.

Probably fixed by https://reviews.llvm.org/D73374
(see also issue 1045291).

Bug: 426868,1045291
Change-Id: I327d06c7a3357970a09fcc725c0d1d080e5b1a3c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2050803
Reviewed-by: Hans Wennborg <hans@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#740725}

tools/msan/blacklist.txt

@@ -12,9 +12,6 @@ fun:*MOZ_Z_deflate*
 # http://crbug.com/418383
 fun:longest_match
 
-# Uninit in zlib with SIMD intrinsic http://crbug.com/426868
-fun:crc_fold512_to_32
-
 # False positives due to use of linux_syscall_support. http://crbug.com/394028
 src:*/third_party/breakpad/breakpad/src/*
 src:*/components/crash/content/app/breakpad_linux.cc