build: Drop ZeroMQ patch for glibc < 2.12

It is safe to use pthread_setname_np since #17538 when the minimal glibc
version is set to 2.17.

depends/patches/zeromq/0002-disable-pthread_set_name_np.patch

@@ -1,35 +0,0 @@
-From c9bbdd6581d07acfe8971e4bcebe278a3676cf03 Mon Sep 17 00:00:00 2001
-From: mruddy <6440430+mruddy@users.noreply.github.com>
-Date: Sat, 30 Jun 2018 09:57:18 -0400
-Subject: [PATCH] disable pthread_set_name_np
-
-pthread_set_name_np adds a Glibc requirement on >= 2.12.
----
- src/thread.cpp | 4 +++-
- 1 file changed, 3 insertions(+), 1 deletion(-)
-
-diff --git a/src/thread.cpp b/src/thread.cpp
-index a1086b0c..9943f354 100644
---- a/src/thread.cpp
-+++ b/src/thread.cpp
-@@ -308,7 +308,7 @@ void zmq::thread_t::setThreadName (const char *name_)
-  */
-     if (!name_)
-         return;
--
-+#if 0
- #if defined(ZMQ_HAVE_PTHREAD_SETNAME_1)
-     int rc = pthread_setname_np (name_);
-     if (rc)
-@@ -324,6 +324,8 @@ void zmq::thread_t::setThreadName (const char *name_)
- #elif defined(ZMQ_HAVE_PTHREAD_SET_NAME)
-     pthread_set_name_np (_descriptor, name_);
- #endif
-+#endif
-+    return;
- }
- 
- #endif
--- 
-2.17.1
-