glibc: drop caddr_t patch

We've been carrying around this patch for ages. It was first added in
commit 42e908c4 ("libc/glibc: workaround for autoconf'ed define of
caddr_t") and ported to glibc-2.13 in commit de6b6733 ("libc/glibc: add
patch to avoid caddr_t redefinition"). It has been ported to every new
version of glibc ever since.

It's not immediately obvious that the original problem still affects
modern glibc versions. If there is a problem it hasn't been reported to
the glibc maintainers in the 12 years since it was first seen. It could
be that ct-ng is unique in the way we support canadian builds or that
there was another fix for the same problem applied upstream sometime in
the last 12 years.

Drop the patch now to stop in being propagated blindly to new glibc
versions. Doing it as a separate commit (as opposed to dropping it in
the previous commit which bumped the version) allows the decision to be
documented and if this turns out to be wrong it can be easily reverted.

Signed-off-by: Chris Packham <judge.packham@gmail.com>

packages/glibc/2.37/0000-typedef-caddr.patch

@@ -1,17 +0,0 @@
----
- posix/sys/types.h |    3 +++
- 1 file changed, 3 insertions(+)
-
---- a/posix/sys/types.h
-+++ b/posix/sys/types.h
-@@ -112,7 +112,10 @@
- #ifdef	__USE_MISC
- # ifndef __daddr_t_defined
- typedef __daddr_t daddr_t;
-+#  if ! defined(caddr_t) && ! defined(__caddr_t_defined)
- typedef __caddr_t caddr_t;
-+#   define __caddr_t_defined
-+#  endif
- #  define __daddr_t_defined
- # endif
- #endif