libsolv: Drop now uneeded musl patch

libsolv: Drop now uneeded musl patch

Drop the musl specific fopencookie patches since musl
added support for fopencookie in:
   06184334 implement the fopencookie extension to stdio
in December 2017 so it has been in musl since v1.1.19.
There was no change in libsolv's configure log when building
with musl and these patches dropped.

Signed-off-by: Randy MacLeod <Randy.MacLeod@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>