Delete icu4j from pathmap.mk

frameworks/base/icu4j is gone in jb-mr2-dev.

Change-Id: I078c8ac3db85598a9b30f8220f251eb7631151e0
diff --git a/core/pathmap.mk b/core/pathmap.mk
index 27f42d4..045ee0c 100644
--- a/core/pathmap.mk
+++ b/core/pathmap.mk
@@ -97,7 +97,6 @@
 	    telephony \
 	    wifi \
 	    keystore \
-	    icu4j \
 	 )
 
 #