sqlite: Remove TSAN suppression for unixTempFileDir.

Chrome currently builds SQLite with SQLITE_TEMP_STORE=3, which disables
temporary storage, so unixTempFileDir should never be called.

Bug: 244385
Change-Id: Idfa8bf86d997654c619db5d2abf3198afae41983
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1661499
Reviewed-by: David Benjamin <davidben@chromium.org>
Commit-Queue: Victor Costan <pwnall@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#669829}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 0dd19e3384863aef22aca199a97dd6d11901b6ca

sanitizers/tsan_suppressions.cc

@@ -52,9 +52,6 @@ char kTSanDefaultSuppressions[] =
     // http://crbug.com/239359
     "race:media::TestInputCallback::OnData\n"
 
-    // http://crbug.com/244385
-    "race:unixTempFileDir\n"
-
     // http://crbug.com/244755
     "race:v8::internal::Zone::NewExpand\n"