Revert "Sample selection update to featomic" #512

Job	Run time
setup	2s
generate-example (lode-linear)	3m 23s
generate-example (roy-gch)	3m 28s
generate-example (dos-align)	5m 42s
generate-example (lpr)	3m 33s
generate-example (batch-cp2k)	1m 59s
generate-example (gaas-map)	4m 6s
generate-example (pi-metad)	4m 24s
generate-example (sample-selection)	3m 35s
generate-example (thermostats)	3m 2s
generate-example (heat-capacity)	2m 24s
generate-example (periodic-hamiltonian)	5m 24s
generate-example (pi-mts-rpc)	5m 36s
generate-example (path-integrals)	1m 55s
build-and-publish	0s
	48m 33s

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