tools: do not disable ICU's transliteration

V8 needs it for case conversion.
Ref: https://codereview.chromium.org/1812673005

PR-URL: https://github.com/nodejs/node/pull/8317
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>

tools/icu/icu-generic.gyp

@@ -42,7 +42,6 @@
           }],
         ],
         'defines': [
-          'UCONFIG_NO_TRANSLITERATION=1',
           'UCONFIG_NO_SERVICE=1',
           'UCONFIG_NO_REGULAR_EXPRESSIONS=1',
           'U_ENABLE_DYLOAD=0',

tools/icu/icu_small.json

@@ -25,7 +25,7 @@
     "zone": "locales",
     "converters": "none",
     "stringprep": "locales",
-    "translit": "none",
+    "translit": "locales",
     "brkfiles": "none",
     "brkdict": "none",
     "confusables": "none",