Remove tune-system.sh script and its use (#7278)

multinode-demo/bootstrap-leader.sh

@@ -60,11 +60,6 @@ while [[ -n $1 ]]; do
   fi
 done
 
-if [[ -z $CI ]]; then # Skip in CI
-  # shellcheck source=scripts/tune-system.sh
-  source "$here"/../scripts/tune-system.sh
-fi
-
 # These keypairs are created by ./setup.sh and included in the genesis config
 identity_keypair=$SOLANA_CONFIG_DIR/bootstrap-leader/identity-keypair.json
 vote_keypair="$SOLANA_CONFIG_DIR"/bootstrap-leader/vote-keypair.json

multinode-demo/validator.sh

@@ -217,11 +217,6 @@ else
   program=$solana_validator
 fi
 
-if [[ -z $CI ]]; then # Skip in CI
-  # shellcheck source=scripts/tune-system.sh
-  source "$here"/../scripts/tune-system.sh
-fi
-
 set -e
 PS4="$(basename "$0"): "