Revert "Add symlink for hostname(1)."

This reverts commit 388946d62414157c27959448b33df1fd9cdb1bee.

Reason for revert: http://b/123123255

Change-Id: Id13c42d593e11e59c33691354b6bfadce0f40783
diff --git a/toybox/linux-x86/hostname b/toybox/linux-x86/hostname
deleted file mode 120000
index c6b4b1f..0000000
--- a/toybox/linux-x86/hostname
+++ /dev/null
@@ -1 +0,0 @@
-../../linux-x86/bin/toybox
\ No newline at end of file