don't catch the exception thrown when we cannot obtain the testable mode lock,...

don't catch the exception thrown when we cannot obtain the testable mode lock, this is no longer necessary as all threads will obtain the lock at the beginning

src/Application.cc

@@ -836,12 +836,7 @@ TransferElement::ID Application::readAny(std::list<std::reference_wrapper<Transf
     return mtca4u::TransferElement::readAny(elementsToRead);
   }
   else {
-    try {
-      testableModeUnlock("readAny");
-    }
-    catch(std::system_error &e) {   // ignore operation not permitted errors, since they happen the first time (lock not yet owned)
-      if(e.code() != std::errc::operation_not_permitted) throw;
-    }
+    testableModeUnlock("readAny");
     auto ret = mtca4u::TransferElement::readAny(elementsToRead);
     assert(testableModeTestLock());  // lock is acquired inside readAny(), since TestDecoratorTransferFuture::wait() is called there.
     return ret;