build/bin: Remove nsh from the final ROMFS #1744

Job	Run time
variables	1s
fc_matrix (saluki-nxp93_flat) / build	5m 55s
fc_matrix (pixhawk) / build	6m 22s
fc_matrix (fmu-v6xrt) / build	7m 0s
fc_matrix (saluki-pi_amp) / build	9m 6s
fc_matrix (saluki-pi_custom_keys, Tools/saluki-sec-scripts/custom_keys/saluki-pi/px4_bin_ed25519_... / build	9m 6s
fc_matrix (saluki-pi_default) / build	8m 58s
fc_matrix (saluki-pi_flat) / build	7m 0s
fc_matrix (saluki-v2_amp) / build	9m 4s
fc_matrix (saluki-v2_custom_keys, Tools/saluki-sec-scripts/custom_keys/saluki-v2/px4_bin_ed25519_... / build	9m 2s
fc_matrix (saluki-v2_default) / build	9m 5s
fc_matrix (saluki-v2_flat) / build	6m 52s
fc_matrix (saluki-v3_amp) / build	9m 8s
fc_matrix (saluki-v3_custom_keys, Tools/saluki-sec-scripts/custom_keys/saluki-v3/px4_bin_ed25519_... / build	9m 3s
fc_matrix (saluki-v3_default) / build	9m 13s
fc_matrix (saluki-v3_flat) / build	6m 42s
build px4fwupdater	2m 0s
upload px4fwupdater to docker registry	1m 36s
upload builds to UAE artifactory	5m 9s
upload px4fwupdater to UAE docker registry	0s
	2h 10m 22s

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