Remove unnecessary dependency on bouncycastle

Nothing in this target requires bouncycastle.
Bug: 113148576
Test: build

Change-Id: I6128fca1eca1c6cefe679721a4cf72729d27d6bb
diff --git a/tests/NetworkSecurityConfigTest/Android.mk b/tests/NetworkSecurityConfigTest/Android.mk
index fe65ecc..c225e17 100644
--- a/tests/NetworkSecurityConfigTest/Android.mk
+++ b/tests/NetworkSecurityConfigTest/Android.mk
@@ -7,7 +7,6 @@
 
 LOCAL_JAVA_LIBRARIES := \
     android.test.runner \
-    bouncycastle \
     conscrypt \
     android.test.base \