Remove superfluous OpenSSL include paths.

The libcrypto and libssl modules (and their respective static and host
versions) use LOCAL_EXPORT_C_INCLUDE_DIRS thus just including the module
is sufficient.

Additionally, cryptfs.h was including an OpenSSL header just to get the
length of a SHA-256 hash. Rather than force all users of this header to
also depend on libcrypto, it's easier just to define that value in the
header file.

Change-Id: I3e3e0db906a212e1093944b298e4a8ff2e2fb07d
diff --git a/tests/Android.mk b/tests/Android.mk
index bcdcfca..f974e7f 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -5,8 +5,7 @@
 LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
 
 LOCAL_C_INCLUDES := \
-    system/core/fs_mgr/include \
-    external/openssl/include \
+    system/core/fs_mgr/include
 
 LOCAL_SHARED_LIBRARIES := \
     liblog \