Removed unnecessary waiting for 1 sec in examples #921

Job	Run time
tests-argmin-checkpointing-file	11s
tests-argmin	3m 16s
tests-argmin-observer-slog	23s
tests-argmin-serde1-feature	1m 40s
clippy	1m 26s
docs-build	18s
rustfmt	18s
tests-argmin-math	5m 5s
tests-argmin-observer-paramwriter	10s
tests-argmin-observer-spectator	1m 3s
wasm-build	19s
cargo-deny (advisories)	28s
cargo-deny (bans licenses sources)	29s
	15m 6s

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