0.5.x: Remove everything deprecated #2892

Job	Run time
check-docs	19s
alternative_targets (ubuntu-latest, wasm32-unknown-emscripten)	29s
alternative_targets (ubuntu-latest, aarch64-apple-ios)	12s
alternative_targets (ubuntu-latest, aarch64-linux-android)	16s
cross-targets (x86_64-sun-solaris)	1m 15s
cross-tests (ubuntu-latest)	1m 49s
features_check (ubuntu-latest)	5m 27s
features_check (macos-latest)	17m 42s
no_std (ubuntu-latest, thumbv6m-none-eabi)	13s
features_check (windows-latest)	10m 4s
no_std (ubuntu-latest, x86_64-fortanix-unknown-sgx)	18s
rust_msrv (ubuntu-latest)	1m 27s
rust_versions (ubuntu-latest, stable)	58s
rust_versions (ubuntu-latest, beta)	1m 7s
test_wasi (ubuntu-latest, wasm32-wasi)	26s
rust_versions (ubuntu-latest, nightly)	1m 10s
test_wasm (ubuntu-latest)	31s
timezones (ubuntu-latest, ACST-9:30)	1m 20s
timezones (ubuntu-latest, EST4)	1m 33s
timezones (ubuntu-latest, UTC0)	1m 15s
timezones (ubuntu-latest, Asia/Katmandu)	1m 31s
timezones (macos-latest, ACST-9:30)	1m 32s
timezones (macos-latest, EST4)	1m 44s
timezones (macos-latest, UTC0)	1m 47s
timezones (macos-latest, Asia/Katmandu)	1m 30s
timezones (windows-latest, ACST-9:30)	2m 22s
timezones (windows-latest, EST4)	2m 13s
timezones (windows-latest, UTC0)	2m 7s
timezones (windows-latest, Asia/Katmandu)	2m 7s
	1h 4m 44s

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