Move conscrypt out to external/conscrypt

Change-Id: I8895638441ceccb5d794238eb2c8f91a3028dcc9
diff --git a/Android.mk b/Android.mk
index 51c69c6..f854172 100644
--- a/Android.mk
+++ b/Android.mk
@@ -19,7 +19,7 @@
 # Subprojects with separate makefiles
 #
 
-subdirs := benchmarks crypto
+subdirs := benchmarks
 subdir_makefiles := $(call all-named-subdir-makefiles,$(subdirs))
 
 #