Revert "Copy generated xml file for NDK api coverage to dist when CLANG_COVERAGE flag set."

This reverts commit a81ee59b74f786d9a5b0234e75d7dfab35d384cb.

Reason for revert: maybe broke the build b/158783867

Change-Id: Ia7a81109de3adb4b5226b4139f3e231e60473283
diff --git a/core/main.mk b/core/main.mk
index 2b59c07..5d2ec7c 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -1665,11 +1665,6 @@
   $(call dist-for-goals, dist_files, $(api_xmls))
   api_xmls :=
 
-  ifdef CLANG_COVERAGE
-    $(foreach f,$(SOONG_NDK_API_XML), \
-        $(call dist-for-goals,droidcore,$(f):ndk_coverage_xml_dir/$(notdir $(f))))
-  endif
-
 # Building a full system-- the default is to build droidcore
 droid_targets: droidcore dist_files