Delete support for segment selectors (#720) #501

Job	Run time
coverage	1m 17s
Build fuzz targets	1m 17s
bench	1m 42s
build (ubuntu-latest, stable)	42s
build (ubuntu-latest, beta)	46s
cross (i686-unknown-linux-gnu)	49s
doc	19s
build (ubuntu-latest, nightly)	45s
cross (powerpc64-unknown-linux-gnu)	57s
features	2m 53s
build (stable, macOS-latest)	44s
msrv	1m 59s
msrv-read	1m 49s
rustfmt	5s
Run `debug_abbrev` fuzz target	5m 6s
Run `debug_aranges` fuzz target	5m 14s
Run `debug_info` fuzz target	5m 6s
Run `debug_line` fuzz target	5m 10s
Run `eh_frame` fuzz target	5m 11s
Run `eh_frame_hdr` fuzz target	5m 9s
	47m 0s

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