- Remove patch-thread.c forgot it in the previous commit.

Submitted by:	Walter Schwarzen via ruby ml

lang/ruby22/files/patch-thread.c

@@ -1,13 +0,0 @@
---- thread.c.orig	2016-11-11 22:33:21 UTC
-+++ thread.c
-@@ -462,8 +462,8 @@ rb_threadptr_unlock_all_locking_mutexes(
- void
- rb_thread_terminate_all(void)
- {
--    rb_thread_t *th = GET_THREAD(); /* main thread */
--    rb_vm_t *vm = th->vm;
-+    rb_thread_t *volatile th = GET_THREAD(); /* main thread */
-+    rb_vm_t *volatile vm = th->vm;
- 
-     if (vm->main_thread != th) {
- 	rb_bug("rb_thread_terminate_all: called by child thread (%p, %p)",