We removed support for JavaHelp a long while back. Some traces of that support remain in the tests.

 grep -r JAVAHELP test/
test//versionCheck/TestVersionCheck.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//versionCheck/TestVersionCheck.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//TestWhiteSpaceFiles.gmk: $(JTREG_IMAGE_JAVAHELP_JAR) \
test//libdirs/LibDirsTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//problemList/ProblemList.gmk: $(JTREG_IMAGE_JAVAHELP_JAR) \
test//autovm/AutoVMTests.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//match/MatchTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//testng/TestNGLibTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//fixup/FixupTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR) \
test//exclude/ExcludeTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//classIsolation/ClassIsolationTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//classIsolation/ClassIsolationTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//classIsolation/ClassIsolationTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//classIsolation/ClassIsolationTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//basic/Basic.gmk: $(JTREG_IMAGE_JAVAHELP_JAR) \
test//basic/Basic.gmk: $(JTREG_IMAGE_JAVAHELP_JAR) \
test//statusFilter/StatusFilterTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//statsTests/StatsTests.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//statsTests/StatsTests.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//env/EnvTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR) \
test//env/EnvTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR) \
test//7113596/T7113596.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//ignoresymbolfile/IgnoreSymbolFileTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//jcov/jcov.gmk: $(JTREG_IMAGE_JAVAHELP_JAR) \
test//testprops/TestPropsTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//i18n/i18n.com.sun.javatest.regtest.gmk: CLASSPATH="$(CLASSDIR)$(PS)$(JAVADIR)$(PS)$(JAVATEST_JAR)$(PS)$(JAVAHELP_JAR)" \
test//multirun/MultiRunTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR) \
test//multirun/MultiRunTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR) \
test//libBuildArgs/LibBuildArgsTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)
test//libBuildArgs/LibBuildArgsTest.gmk: $(JTREG_IMAGE_JAVAHELP_JAR)