Remove now unneeded patch

We do not build shout examples anymore

libvlc/patches/0018-contrib-shout-usleep-is-not-a-Windows-API.patch

-From db8c8193756ad2552df54db409a784c3d9345f26 Mon Sep 17 00:00:00 2001
-From: Steve Lhomme <robux4@ycbcr.xyz>
-Date: Thu, 29 Mar 2018 15:03:37 +0200
-Subject: [PATCH 18/38] contrib: shout: usleep() is not a Windows API
-
----
- contrib/src/shout/rules.mak         |  1 +
- contrib/src/shout/shout-win32.patch | 14 ++++++++++++++
- 2 files changed, 15 insertions(+)
- create mode 100644 contrib/src/shout/shout-win32.patch
-
-diff --git a/contrib/src/shout/rules.mak b/contrib/src/shout/rules.mak
-index c4a1c15fab..a61550f9b7 100644
---- a/contrib/src/shout/rules.mak
-+++ b/contrib/src/shout/rules.mak
-@@ -25,6 +25,7 @@ libshout: libshout-$(SHOUT_VERSION).tar.gz .sum-shout
- 	$(APPLY) $(SRC)/shout/fix-xiph_openssl.patch
- 	$(APPLY) $(SRC)/shout/no-examples.patch
- 	$(APPLY) $(SRC)/shout/shout-strings.patch
-+	$(APPLY) $(SRC)/shout/shout-win32.patch
- 	$(call pkg_static,"shout.pc.in")
- 	$(UPDATE_AUTOCONFIG)
- 	$(MOVE)
-diff --git a/contrib/src/shout/shout-win32.patch b/contrib/src/shout/shout-win32.patch
-new file mode 100644
-index 0000000000..f29926ef1d
---- /dev/null
-+++ b/contrib/src/shout/shout-win32.patch
-@@ -0,0 +1,14 @@
-+--- libshout-2.4.1/examples/nonblocking.c.win32	2018-03-29 11:06:58.356033300 +0200
-++++ libshout-2.4.1/examples/nonblocking.c	2018-03-29 11:10:39.018958800 +0200
-+@@ -70,7 +70,11 @@ int main()
-+ 	  printf("Connection pending...\n");
-+ 
-+ 	while (ret == SHOUTERR_BUSY) {
-++#ifdef _WIN32
-++	  Sleep(10);
-++#else
-+ 	  usleep(10000);
-++#endif
-+ 	  ret = shout_get_connected(shout);
-+ 	}
-+ 	
--- 
-2.19.2
-