remove infstones relay from sample config (#312)

Author: nickh-obol

.env.sample.hoodi

@@ -152,7 +152,7 @@ MEV_RELAYS=https://0x98f0ef62f00780cf8eb06701a7d22725b9437d4768bb19b363e882ae871
 #CHARON_VERSION=
 
 # Define custom relays. One or more ENRs or an http URL that return an ENR. Use a comma separated list excluding spaces.
-CHARON_P2P_RELAYS=https://0.relay.obol.tech,https://1.relay.obol.tech/,https://charon-relay.dsrvlabs.dev/,https://obol-relay.infstones.com/,https://relay-2.prod-relay.721.land/
+CHARON_P2P_RELAYS=https://0.relay.obol.tech,https://1.relay.obol.tech/,https://charon-relay.dsrvlabs.dev/,https://relay-2.prod-relay.721.land/
 
 # Connect to one or more external beacon nodes. Use a comma separated list excluding spaces.
 CHARON_BEACON_NODE_ENDPOINTS=http://${CL}:5052

.env.sample.mainnet

@@ -152,7 +152,7 @@ MEV_RELAYS=https://0xa15b52576bcbf1072f4a011c0f99f9fb6c66f3e1ff321f11f461d15e31b
 #CHARON_VERSION=
 
 # Define custom relays. One or more ENRs or an http URL that return an ENR. Use a comma separated list excluding spaces.
-CHARON_P2P_RELAYS=https://0.relay.obol.tech,https://1.relay.obol.tech/,https://charon-relay.dsrvlabs.dev/,https://obol-relay.infstones.com/,https://relay-2.prod-relay.721.land/
+CHARON_P2P_RELAYS=https://0.relay.obol.tech,https://1.relay.obol.tech/,https://charon-relay.dsrvlabs.dev/,https://relay-2.prod-relay.721.land/
 
 # Connect to one or more external beacon nodes. Use a comma separated list excluding spaces.
 CHARON_BEACON_NODE_ENDPOINTS=http://${CL}:5052