remove redis, since we dont use it

backend/dev_livekit.yaml

@@ -6,11 +6,6 @@ rtc:
   port_range_start: 50100
   port_range_end: 50200
   use_external_ip: false
-#redis:
-#    address: redis:6379
-#    username: ""
-#    password: ""
-#    db: 0
 turn:
   enabled: false
   domain: localhost

backend/redis.conf

@@ -1,5 +0,0 @@
-bind 0.0.0.0
-protected-mode yes
-port 6379
-timeout 0
-tcp-keepalive 300