Revert of [test] Add back lsan leak detection

tools/run-tests.py

 #!/usr/bin/env python
 #
 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 385 matching lines @@
   os.environ['LANG'] = 'en_US.UTF-8'
 
   symbolizer = 'external_symbolizer_path=%s' % (
       os.path.join(
           BASE_DIR, 'third_party', 'llvm-build', 'Release+Asserts', 'bin',
           'llvm-symbolizer',
       )
   )
 
   if options.asan:
-    os.environ['ASAN_OPTIONS'] = ":".join([
-      'detect_leaks=1',
-      symbolizer,
-    ])
-    os.environ['LSAN_OPTIONS'] = ":".join([
-      'suppressions=%s' % os.path.join(
-          BASE_DIR, 'tools', 'memory', 'lsan', 'suppressions.txt'),
-    ])
+    os.environ['ASAN_OPTIONS'] = symbolizer
 
   if options.sancov_dir:
     assert os.path.exists(options.sancov_dir)
     os.environ['ASAN_OPTIONS'] = ":".join([
       'coverage=1',
       'coverage_dir=%s' % options.sancov_dir,
       symbolizer,
     ])
 
   if options.cfi_vptr:
@@ skipping 503 matching lines @@
         "--coverage-dir=%s" % options.sancov_dir])
     except:
       print >> sys.stderr, "Error: Merging sancov files failed."
       exit_code = 1
 
   return exit_code
 
 
 if __name__ == "__main__":
   sys.exit(Main())