4.x: Remove unused code from io.helidon.http.Utils #7017

Job	Run time
shellcheck	3m 9s
checkstyle	3m 58s
copyright	3m 27s
build	6m 38s
tests/tck-cdi	18m 5s
javadoc (core)	7m 25s
tests/tck-rest	14m 54s
javadoc (integrations)	5m 36s
spotbugs/core	10m 49s
tests/tck-others	17m 3s
javadoc (others)	8m 9s
tests/native-image-mp-1-linux	8m 0s
spotbugs/integrations	7m 31s
tests/native-image-mp-2-linux	12m 1s
spotbugs/others	13m 6s
tests/core	11m 8s
archetypes/r1-jar	6m 53s
tests/native-image-mp-3-linux	6m 45s
tests/it	14m 40s
archetypes/r2-jar	7m 9s
tests/native-image-se-1-linux	7m 18s
tests/dbclient	8m 53s
docs	4m 46s
archetypes/r3-jar	6m 0s
tests/native-image-inject-linux	6m 25s
archetypes/r4-jar	7m 0s
tests/dbclient-oracle	15m 40s
tests/native-image-mp-1-macos	9m 31s
archetypes/r5-jar	5m 20s
tests/others	13m 27s
examples/linux	13m 6s
tests/native-image-mp-2-macos	17m 48s
examples/macos	9m 5s
tests/native-image-mp-3-macos	7m 25s
archetypes/legacy	5m 2s
tests/packaging-jar-linux	6m 58s
tests/native-image-se-1-macos	6m 20s
tests/packaging-jlink-linux	8m 47s
quickstarts/linux	12m 19s
tests/native-image-inject-macos	8m 16s
tests/packaging-jar-macos	5m 0s
quickstarts/macos	11m 50s
tests/packaging-jlink-macos	6m 37s
tests/results	11s
gate	1s
	6h 29m 31s

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