Remove unused function in fru parser code

setupDBusLookup() is declared by never defined, its
a dead code.

Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
Change-Id: I5d00343251835848169a7867647bfa074a01a197
diff --git a/libpldmresponder/fru_parser.hpp b/libpldmresponder/fru_parser.hpp
index ce6f619..2ca18cf 100644
--- a/libpldmresponder/fru_parser.hpp
+++ b/libpldmresponder/fru_parser.hpp
@@ -110,14 +110,6 @@
     }
 
   private:
-    /** @brief Parse the FRU_Master.json file and populate the D-Bus lookup
-     *         information which provides the service, root D-Bus path and the
-     *         item interfaces.
-     *
-     *  @param[in] filePath - file path to FRU_Master.json
-     */
-    void setupDBusLookup(const fs::path& filePath);
-
     /** @brief Parse the FRU Configuration JSON file in the directory path
      *         except the FRU_Master.json and build the FRU record information
      *