remove support for RequestUnitsDeprecated instruction #27500

Active on mainnet-beta (epoch 540), testnet (epoch 516) and devnet (epoch 561).

Introduced in solana-labs/solana PR #27503.

Feature id EfhYd3SafzGT472tYQDUc4dPd2xdEfKs5fwkowUgVt4W.

Vortex

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