Aldesleukin Withdrawn Phase 2 Trials for Metastatic Ureter Urothelial Carcinoma / Unresectable Ureter Urothelial Carcinoma / Metastatic Bladder Urothelial Carcinoma / Metastatic Urethral Urothelial Carcinoma / Metastatic Renal Pelvis Urothelial Carcinoma / Unresectable Renal Pelvis Urothelial Carcinoma Treatment