Remove unused --port flag from JavaRuntime test launcher to avoid spu… #1835

Job	Run time
build (ubuntu-latest, 17, temurin)	22m 19s
build (ubuntu-latest, 25, temurin)	18m 18s
build (ubuntu-latest, 26-ea, temurin)	16m 51s
build (ubuntu-latest, 21, temurin)	23m 23s
	1h 20m 51s

Provide feedback