WIP: Reverting changes in VNF for UL_INFO to use only UL_info

This commit will remove the new UL_INFO local variable we (EpiSci) created in the VNF. This struct is used to store the uplink 5G nFAPI messages between the proxy and the gNB MAC layer. The original OAI implementation utilizes a similarly named variable (UL_info) to store the uplink 5G nFAPI messages between the PHY and MAC layer. This commit will utilize the original UL_info variable prior to calling the handle functions. These changes allow us to make minimal changes to the nFAPI handle functions and modifies the NR_UL_Indication parent function instead.