Revert "valgrind.supp: be less picky about library versions"

This reverts commit f895d16c9e2fd59aab446254e53480cdb91092a1.
(cherry picked from commit bab84d45abdaac101a517eb85540c706e3f58363)
valgrind: fix tcmalloc suppression for trusty

Fixes: #8225
Signed-off-by: Sage Weil <sage@inktank.com>
(cherry picked from commit f261687f292df47b7a5296814480713c3c3d306f)