Investigating the unused static files in the balloon code, I discovered
that the balloon code is not used at all.
The header file is one big #if 0 and all the functions in the C file
is static. There is no caller like init_module to hook to any of
these functions. Basically, this code is one big patch of dead code
wasting space on my hard drive.
This patch removes the balloon code altogether since there are no
users.
-subsys_initcall(balloon_init);