Remove one last icu.dat.

Change-Id: Iadeae68e49b18d735e7cfc263800c96998efd23b
diff --git a/target/product/runtime_common.mk b/target/product/runtime_common.mk
index 8b12bf6..faa6fe8 100644
--- a/target/product/runtime_common.mk
+++ b/target/product/runtime_common.mk
@@ -30,7 +30,6 @@
     dx \
     ext \
     hprof-conv \
-    icu.dat \
     libcrypto \
     libexpat \
     libicui18n \