tests: TSAN no longer fails on test_virtmem

For failing case compiler-rt support was added in 2014 - 5 years ago
(see links in removed code).

Makefile

 # Wendelin.core | Instructions to build & test
-# Copyright (C) 2014-2015  Nexedi SA and Contributors.
+# Copyright (C) 2014-2019  Nexedi SA and Contributors.
 #                     	   Kirill Smelkov <kirr@nexedi.com>
 #
 # This program is free software: you can Use, Study, Modify and Redistribute
@@ -72,11 +72,6 @@ test	: test.t test.py test.fault test.asan test.tsan test.vgmem test.vghel test.
 
 # TODO move XFAIL markers into *.c
 
-# TSAN fails on test_virtmem (http://code.google.com/p/thread-sanitizer/issues/detail?id=75)
-# NOTE the bug was fixed in compiler-rt 20140917 (6afe775d)
-#      -> we can remove this xfail when the fix propagates to gcc/clang release
-XFAIL_bigfile/tests/test_virtmem.tsanrun	:= y
-
 # Before calling our SIGSEGV handler, Memcheck first reports "invalid read|write" error.
 # A solution could be to tell memcheck via VALGRIND_MAKE_MEM_DEFINED that VMA
 # address space is ok to access _before_ handling pagefault.