Removes old reference to encrypted txs #988

Job	Run time
build-binaries	10m 11s
check-packages	5m 11s
build-wasm (wasm, build-wasm-scripts, wasm/tx_.wasm wasm/vp_.wasm wasm/checksums.json )	3m 49s
changelog	15s
build-wasm (wasm-for-tests, build-wasm-tests-scripts, wasm_for_tests/*.wasm)	3m 2s
lints	5m 23s
rust-docs	6m 7s
check-benchmarks	9m 57s
test-unit	10m 19s
test-integration	16m 51s
test-wasm	6m 56s
test-e2e-with-device-automation	9m 21s
test-e2e (0)	22m 4s
test-e2e (1)	23m 10s
test-e2e (2)	17m 56s
test-e2e (3)	17m 54s
test-e2e (4)	17m 51s
upload-coverage	8s
	3h 6m 25s

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