ruby: remove upstreamed patch

Formula/ruby.rb

@@ -28,10 +28,6 @@ class Ruby < Formula
     build 2326
   end
 
-  # pthread_setname_np() is unavailable before Snow Leopard
-  # Reported upstream: https://bugs.ruby-lang.org/issues/9492
-  patch :DATA if MacOS.version < :snow_leopard
-
   def install
     system "autoconf" if build.head?
 
@@ -85,36 +81,3 @@ def caveats; <<-EOS.undent
     assert_equal 0, $?.exitstatus
   end
 end
-
-__END__
-diff --git a/thread_pthread.c b/thread_pthread.c
-index 3911f8f..74d1ab7 100644
---- a/thread_pthread.c
-+++ b/thread_pthread.c
-@@ -1416,15 +1416,6 @@ timer_thread_sleep(rb_global_vm_lock_t* unused)
- }
- #endif /* USE_SLEEPY_TIMER_THREAD */
-
--#if defined(__linux__) && defined(PR_SET_NAME)
--# define SET_THREAD_NAME(name) prctl(PR_SET_NAME, name)
--#elif defined(__APPLE__)
--/* pthread_setname_np() on Darwin does not have target thread argument */
--# define SET_THREAD_NAME(name) pthread_setname_np(name)
--#else
--# define SET_THREAD_NAME(name) (void)0
--#endif
--
- static void *
- thread_timer(void *p)
- {
-@@ -1432,7 +1423,9 @@ thread_timer(void *p)
-
-     if (TT_DEBUG) WRITE_CONST(2, "start timer thread\n");
-
--    SET_THREAD_NAME("ruby-timer-thr");
-+#if defined(__linux__) && defined(PR_SET_NAME)
-+    prctl(PR_SET_NAME, "ruby-timer-thr");
-+#endif
-
- #if !USE_SLEEPY_TIMER_THREAD
-     native_mutex_initialize(&timer_thread_lock);