Remove libnpt from system again.

http://r.android.com/914573 fixes libjdwp to look for it in the APEX.

Test: Flash and boot
Test: adb forward tcp:5555 jdwp:`adb shell pidof com.android.email` && jdb -attach localhost:5555
Test: atest CtsJdwpTestCases
Bug: 124498388
Change-Id: Idf380660a21c88969e42d6a03a6b50fd2baa4c17
diff --git a/CleanSpec.mk b/CleanSpec.mk
index f95f0a7..be5abe7 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -599,6 +599,8 @@
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/dex_bootjars)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/dex_bootjars_input)
 
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib*/libnpt.so)
+
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************