remove deadlock:doocsServerTestHelper.cc which seems no longer to be needed.

sanitizer.suppressions/tsan.supp

 ### NOTE: Keep this file in sync with the lower part of tsan-doocs.supp ###
 
 # BEGIN blacklist lock-order-false-positives from doocsServerTestHelper
-deadlock:doocsServerTestHelper.cc
+# This seems not to be needed any more. At least the DoocsAdapter runs through without.
+# If it is needed to re-enable, please not the project which fails without!
+#deadlock:doocsServerTestHelper.cc
 # END blacklist lock-order false-positives from doocsServerTestHelper
 
 # BEGIN blacklist everything from libzmq; suggested by TSAN wiki