revert r35486 (add rb_thread_t#yeiling field). because it doesn't help

to close a race.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38062 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 0 insertions, 1 deletions

diff --git a/vm_core.h b/vm_core.h
index 444dfe7c87..96b55c4931 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -478,7 +478,6 @@ typedef struct rb_thread_struct {
 
     /* passing state */
     int state;
-    int yielding;
 
     int waiting_fd;