build: i18n: save another 1KB..

hmm. Not as dramatic as hoped.

tools/icu/icu-generic.gyp

@@ -22,6 +22,47 @@
       '../../deps/icu/source/common/usprep.cpp',
       '../../deps/icu/source/common/uts46.cpp',
     ],
+    'icu_src_trim_i18n': [
+      # alphabetic index
+      '../../deps/icu/source/i18n/alphaindex.cpp',
+      # BOCSU
+      # misc
+      '../../deps/icu/source/i18n/dtitvfmt.cpp',
+      '../../deps/icu/source/i18n/dtitvinf.cpp',
+      '../../deps/icu/source/i18n/dtitv_impl.h',
+      '../../deps/icu/source/i18n/quantityformatter.cpp',
+      '../../deps/icu/source/i18n/quantityformatter.h',
+      '../../deps/icu/source/i18n/regexcmp.cpp',
+      '../../deps/icu/source/i18n/regexcmp.h',
+      '../../deps/icu/source/i18n/regexcst.h',
+      '../../deps/icu/source/i18n/regeximp.cpp',
+      '../../deps/icu/source/i18n/regeximp.h',
+      '../../deps/icu/source/i18n/regexst.cpp',
+      '../../deps/icu/source/i18n/regexst.h',
+      '../../deps/icu/source/i18n/regextxt.cpp',
+      '../../deps/icu/source/i18n/regextxt.h',
+      '../../deps/icu/source/i18n/region.cpp',
+      '../../deps/icu/source/i18n/region_impl.h',
+      '../../deps/icu/source/i18n/reldatefmt.cpp',
+      '../../deps/icu/source/i18n/reldatefmt.h',
+      '../../deps/icu/source/i18n/measfmt.h',
+      '../../deps/icu/source/i18n/measfmt.cpp',
+      '../../deps/icu/source/i18n/scientificformathelper.cpp',
+      '../../deps/icu/source/i18n/tmunit.cpp',
+      '../../deps/icu/source/i18n/tmutamt.cpp',
+      '../../deps/icu/source/i18n/tmutfmt.cpp',
+      '../../deps/icu/source/i18n/uregex.cpp',
+      '../../deps/icu/source/i18n/uregexc.cpp',
+      '../../deps/icu/source/i18n/uregion.cpp',
+      '../../deps/icu/source/i18n/uspoof.cpp',
+      '../../deps/icu/source/i18n/uspoof_build.cpp',
+      '../../deps/icu/source/i18n/uspoof_conf.cpp',
+      '../../deps/icu/source/i18n/uspoof_conf.h',
+      '../../deps/icu/source/i18n/uspoof_impl.cpp',
+      '../../deps/icu/source/i18n/uspoof_impl.h',
+      '../../deps/icu/source/i18n/uspoof_wsconf.cpp',
+      '../../deps/icu/source/i18n/uspoof_wsconf.h',
+    ],
   },
   'includes': [ '../../icu_config.gypi' ],
   'targets': [
@@ -119,6 +160,9 @@
       'sources': [
         '<@(icu_src_i18n)'
       ],
+      'sources!': [
+        '<@(icu_src_trim_i18n)',
+      ],
       'include_dirs': [
         '../../deps/icu/source/i18n',
       ],