Remove Nano S target #1309

Job	Run time
Compilation for X, S+, Stax and Flex (nanox, $NANOX_SDK)	1m 52s
Compilation for X, S+, Stax and Flex (nanosp, $NANOSP_SDK)	1m 48s
Compilation for X, S+, Stax and Flex (stax, $STAX_SDK)	1m 55s
Compilation for X, S+, Stax and Flex (flex, $FLEX_SDK)	1m 59s
Compile the UX-less version of the app on Nano S+ for performance tests	1m 32s
Performance report	4m 26s
Tests on mainnet (nanox)	27s
Tests with the JS library	1m 53s
Tests on mainnet (nanosp)	27s
Tests with the Python library and legacy Bitcoin app	34s
Tests for rust client library	1m 28s
Tests on mainnet (stax)	28s
Tests on mainnet (flex)	5m 30s
Unit test	3m 10s
	27m 29s

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