removed utils benchmark #198

Job	Run time
Clippy (ubuntu-latest)	18s
Examples Bench (ubuntu-latest)	1m 47s
Clippy (macos-latest)	16s
Internals Bench (ubuntu-latest)	8s
Examples Test (ubuntu-latest, stable)	48s
Examples Bench (macos-latest)	1m 55s
Clippy (windows-latest)	22s
Internals Bench (macos-latest)	13s
Examples Test (ubuntu-latest, nightly)	32s
Examples Bench (windows-latest)	4m 10s
Internals Bench (windows-latest)	1m 20s
Examples Test (macos-latest, stable)	28s
Rustdoc	12s
Examples Test (macos-latest, nightly)	39s
Rustfmt	10s
Examples Test (windows-latest, stable)	1m 39s
Unit Test (ubuntu-latest, stable)	25s
Examples Test (windows-latest, nightly)	1m 4s
Unit Test (ubuntu-latest, nightly)	22s
Unit Test (Miri)	1m 15s
Unit Test (macos-latest, stable)	22s
Unit Test (macos-latest, nightly)	27s
Unit Test (windows-latest, stable)	53s
Unit Test (windows-latest, nightly)	1m 1s
	20m 46s

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