Lose dd to toybox.

Just the symlink for now. If this sticks, I'll come back to remove the code.

Bug: N/A
Test: `toolbox dd --help`
Change-Id: I9b967e9246f42db0d1f48d9d147c538d57fb3bc8
diff --git a/toolbox/Android.bp b/toolbox/Android.bp
index ddd95b2..c6d4d9b 100644
--- a/toolbox/Android.bp
+++ b/toolbox/Android.bp
@@ -63,7 +63,6 @@
     static_libs: ["libpropertyinfoparser"],
 
     symlinks: [
-        "dd",
         "getevent",
         "getprop",
         "newfs_msdos",