1 files changed, 1 insertions, 13 deletions
diff --git a/include/ruby/internal/error.h b/include/ruby/internal/error.h
index 1ce9a30e6f..49e2276cb9 100644
--- a/include/ruby/internal/error.h
+++ b/include/ruby/internal/error.h
@@ -50,19 +50,7 @@ typedef enum {
     /** Warning is for experimental features. */
     RB_WARN_CATEGORY_EXPERIMENTAL,
 
-    /** Warning is for performance issues (not enabled by -w). */
-    RB_WARN_CATEGORY_PERFORMANCE,
-
-    RB_WARN_CATEGORY_DEFAULT_BITS = (
-        (1U << RB_WARN_CATEGORY_DEPRECATED) |
-        (1U << RB_WARN_CATEGORY_EXPERIMENTAL) |
-        0),
-
-    RB_WARN_CATEGORY_ALL_BITS = (
-        (1U << RB_WARN_CATEGORY_DEPRECATED) |
-        (1U << RB_WARN_CATEGORY_EXPERIMENTAL) |
-        (1U << RB_WARN_CATEGORY_PERFORMANCE) |
-        0)
+    RB_WARN_CATEGORY_ALL_BITS = 0x6 /* no RB_WARN_CATEGORY_NONE bit */
 } rb_warning_category_t;
 
 /** for rb_readwrite_sys_fail first argument */