Remove unused code

This line was added in 055713e4b201b049cd6a2d9ca58b89dbf916759f but
clang-18 correctly notes that it is unused.  Remove it.

Tested: Code compiles.

Change-Id: I4fc836e4de4c29a22b26fad048309efa297d3412
Signed-off-by: Ed Tanous <etanous@nvidia.com>
diff --git a/redfish-core/lib/manager_logservices_journal.hpp b/redfish-core/lib/manager_logservices_journal.hpp
index c8926c3..8d383bd 100644
--- a/redfish-core/lib/manager_logservices_journal.hpp
+++ b/redfish-core/lib/manager_logservices_journal.hpp
@@ -627,8 +627,6 @@
         return;
     }
 
-    std::string idStr = getUniqueEntryID(index, ts, bootID);
-
     nlohmann::json::object_t bmcJournalLogEntry;
     if (!fillBMCJournalLogEntryJson(entryID, journal.get(), bmcJournalLogEntry))
     {