diff --git a/ruby-2.0-r36832-rb_float_value-optimization.patch b/ruby-2.0-r36832-rb_float_value-optimization.patch
deleted file mode 100644
index 97dc58b..0000000
--- a/ruby-2.0-r36832-rb_float_value-optimization.patch
+++ /dev/null
@@ -1,46 +0,0 @@
-From 0b89d6d5f9f8c788f4391d8a0499f10aed624371 Mon Sep 17 00:00:00 2001
-From: ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
-Date: Mon, 27 Aug 2012 09:22:21 +0000
-Subject: [PATCH] * include/ruby/ruby.h (rb_float_value): optimize it.   This
- technique was pointed by shinichiro.hamaji  
- <http://shinh.skr.jp/m/?date=20120825#p02>.
-
-git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36832 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
----
- ChangeLog           |    6 ++++++
- include/ruby/ruby.h |   10 +++++-----
- 2 files changed, 11 insertions(+), 5 deletions(-)
-
-diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h
-index 3905b32..b8b2267 100644
---- a/include/ruby/ruby.h
-+++ b/include/ruby/ruby.h
-@@ -733,10 +733,7 @@ struct RFloat {
- rb_float_value(VALUE v)
- {
-     if (FLONUM_P(v)) {
--	if (v == (VALUE)0x8000000000000002) {
--	    return 0.0;
--	}
--	else {
-+	if (v != (VALUE)0x8000000000000002) { /* LIKELY */
- 	    union {
- 		double d;
- 		VALUE v;
-@@ -746,9 +743,12 @@ struct RFloat {
- 	    /* e: xx1... -> 011... */
- 	    /*    xx0... -> 100... */
- 	    /*      ^b63           */
--	    t.v = RUBY_BIT_ROTR(((b63 ^ 1) << 1) | b63 | (v & ~0x03), 3);
-+	    t.v = RUBY_BIT_ROTR(2 - b63 | (v & ~0x03), 3);
- 	    return t.d;
- 	}
-+	else {
-+	    return 0.0;
-+	}
-     }
-     else {
- 	return ((struct RFloat *)v)->float_value;
--- 
-1.7.10
-