ICU-22870 Remove ja_JP_TRADITIONAL pattern generator tests #3096

Job	Run time
clang-valgrind-test	10m 37s
clang-valgrind-intltest (utility)	6m 57s
clang-valgrind-intltest (normalize)	6m 33s
clang-valgrind-intltest (collator)	5m 33s
clang-valgrind-intltest (regex)	5m 36s
clang-valgrind-intltest (format)	16m 12s
clang-valgrind-intltest (translit)	6m 12s
clang-valgrind-intltest (rbbi)	7m 49s
clang-valgrind-intltest (rbnf)	6m 19s
clang-valgrind-intltest (rbnfrt)	6m 22s
clang-valgrind-intltest (icuserv)	5m 22s
clang-valgrind-intltest (idna)	5m 15s
clang-valgrind-intltest (convert)	7m 3s
clang-valgrind-intltest (rbnfp)	5m 21s
clang-valgrind-intltest (csdet)	5m 15s
clang-valgrind-intltest (spoof)	5m 34s
clang-valgrind-intltest (bidi)	5m 38s
	1h 57m 38s

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