Remove references to win_sdk

This goal doesn't exist anymore. The build system automatically
translates it to "sdk".

Test: m win_sdk dist && inspect out/dist/apistubs
Change-Id: Ifc4fb07ce32ef21906e8bb8eae0003b1486a525a
diff --git a/test-legacy/Android.mk b/test-legacy/Android.mk
index ce5e4cf..284008c 100644
--- a/test-legacy/Android.mk
+++ b/test-legacy/Android.mk
@@ -41,6 +41,6 @@
 include $(BUILD_STATIC_JAVA_LIBRARY)
 
 # Archive a copy of the classes.jar in SDK build.
-$(call dist-for-goals,sdk win_sdk,$(full_classes_jar):android.test.legacy.jar)
+$(call dist-for-goals,sdk,$(full_classes_jar):android.test.legacy.jar)
 
 endif  # not TARGET_BUILD_APPS not TARGET_BUILD_PDK=true