Always set Umbra token from env

Author: kshepard

demo/api/backends/umbra_backend.py

@@ -136,8 +136,7 @@ async def find_opportunities(
         print(f"Umbra - find_opportunities, search: {search}")
 
         # Grab token from env until we can get it from the header
-        if not token:
-            token = os.getenv("UMBRA_TOKEN", "")
+        token = os.getenv("UMBRA_TOKEN", "")
 
         if not token:
             raise Exception("Set UMBRA_TOKEN before running the server")