Remove about-to-be-renamed class from preload list.

(Safer than tracking the rename here, since the class is in the dalvik/libcore
repo.)
diff --git a/preloaded-classes b/preloaded-classes
index 63aca99..d108883 100644
--- a/preloaded-classes
+++ b/preloaded-classes
@@ -694,7 +694,7 @@
 com.ibm.icu4jni.charset.CharsetEncoderICU
 com.ibm.icu4jni.charset.CharsetICU
 com.ibm.icu4jni.text.CollationAttribute
-com.ibm.icu4jni.text.DecimalFormat
+com.ibm.icu4jni.text.NativeDecimalFormat
 com.ibm.icu4jni.text.RuleBasedCollator
 com.ibm.icu4jni.util.Resources$DefaultTimeZones
 dalvik.system.DexFile