fix: disable test accounts and sponsored fpc in devnet

Author: spalladino

spartan/environments/devnet.env

@@ -41,8 +41,8 @@ AZTEC_LAG_IN_EPOCHS_FOR_VALIDATOR_SET=1
 AZTEC_LAG_IN_EPOCHS_FOR_RANDAO=1
 AZTEC_SLOT_DURATION=36
 AZTEC_EPOCH_DURATION=8
-TEST_ACCOUNTS=true
-SPONSORED_FPC=true
+TEST_ACCOUNTS=false
+SPONSORED_FPC=false
 FLUSH_ENTRY_QUEUE=true
 
 VALIDATOR_REPLICAS=1