gnu: orc: Update to 0.4.31.

* gnu/packages/patches/orc-typedef-enum.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Adjust accordingly.
* gnu/packages/gstreamer.scm (orc): Update to 0.4.31.
[source](patches): Remove.

gnu/local.mk

@@ -1212,7 +1212,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/openssl-c-rehash-in.patch		\
   %D%/packages/patches/openssl-CVE-2019-1559.patch		\
   %D%/packages/patches/open-zwave-hidapi.patch			\
-  %D%/packages/patches/orc-typedef-enum.patch			\
   %D%/packages/patches/orpheus-cast-errors-and-includes.patch	\
   %D%/packages/patches/osip-CVE-2017-7853.patch			\
   %D%/packages/patches/ots-no-include-missing-file.patch	\

gnu/packages/gstreamer.scm

@@ -69,15 +69,14 @@
 (define-public orc
   (package
     (name "orc")
-    (version "0.4.30")
+    (version "0.4.31")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://gstreamer.freedesktop.org/data/src/"
                                   "orc/orc-" version ".tar.xz"))
-              (patches (search-patches "orc-typedef-enum.patch"))
               (sha256
                (base32
-                "0wj93im7i8a6546q2r8sp39yjfbxflkc0ygb0b8iqsd58qhvjhds"))))
+                "0xb0c7q3xv1ldmz5ipybazb01gy3cijj8622dcx7rbm9lq85zax0"))))
     (build-system meson-build-system)
     (arguments
      `(#:phases

gnu/packages/patches/orc-typedef-enum.patch

@@ -1,17 +0,0 @@
-Orc 0.4.30 has a bug that causes duplicate symbols due to a missing typedef.
-
-Taken from upstream:
-https://gitlab.freedesktop.org/gstreamer/orc/merge_requests/32
-
-diff --git a/orc/orctarget.h b/orc/orctarget.h
---- a/orc/orctarget.h
-+++ b/orc/orctarget.h
-@@ -19,7 +19,7 @@ enum {
-   ORC_TARGET_FAST_DENORMAL = (1<<31)
- };
- 
--enum {
-+typedef enum {
-   ORC_TARGET_POWERPC_64BIT = (1<<0),
-   ORC_TARGET_POWERPC_LE = (1<<1),
-   ORC_TARGET_POWERPC_ALTIVEC = (1<<2),