ruby: drop long-merged CVE patches

The CVE patches here address the original problem in
a different way to how upstream solved it, and are
superfluous.

Ruby updated to Onigmo v6.1.3+669ac999761 before its
v2.5.0 release, and both CVEs were fixed before Onigmo
v6.1.3:
    https://github.com/k-takata/Onigmo/releases/tag/Onigmo-6.1.3
    https://github.com/k-takata/Onigmo/commits/Onigmo-6.1.3
        https://github.com/k-takata/Onigmo/commit/40945546578004bf40e6f884834bcad4054c70f7
        https://github.com/k-takata/Onigmo/commit/783b7ef491e1422e4be7407ccc3e4305e5013507

Because the issues were fixed differently here and
in Ruby (Onigmo), patch never complained about
duplicatation during recipe updates.

(From OE-Core rev: 90dbe9019c81e25923ed450df80b4401d16287b4)

Signed-off-by: André Draszik <andre.draszik@jci.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/ruby/ruby/ruby-CVE-2017-9226.patch

@@ -1,32 +0,0 @@
-From b4bf968ad52afe14e60a2dc8a95d3555c543353a Mon Sep 17 00:00:00 2001
-From: "K.Kosako" <kosako@sofnec.co.jp>
-Date: Thu, 18 May 2017 17:05:27 +0900
-Subject: [PATCH] fix #55 : check too big code point value for single byte
- value in next_state_val()
-
----
- regparse.c |    3 +++
- 1 file changed, 3 insertions(+)
-
---- end of original header
-
-CVE: CVE-2017-9226
-
-Add check for octal number bigger than 255.
-
-Upstream-Status: Pending
-Signed-off-by: Joe Slater <joe.slater@windriver.com>
-
-
---- ruby-2.4.1.orig/regparse.c
-+++ ruby-2.4.1/regparse.c
-@@ -4450,6 +4450,9 @@ next_state_val(CClassNode* cc, CClassNod
-   switch (*state) {
-   case CCS_VALUE:
-     if (*type == CCV_SB) {
-+      if (*from > 0xff)
-+          return ONIGERR_INVALID_CODE_POINT_VALUE;
-+
-       BITSET_SET_BIT_CHKDUP(cc->bs, (int )(*from));
-       if (IS_NOT_NULL(asc_cc))
- 	BITSET_SET_BIT(asc_cc->bs, (int )(*from));

meta/recipes-devtools/ruby/ruby/ruby-CVE-2017-9228.patch

@@ -1,34 +0,0 @@
-From 3b63d12038c8d8fc278e81c942fa9bec7c704c8b Mon Sep 17 00:00:00 2001
-From: "K.Kosako" <kosako@sofnec.co.jp>
-Date: Wed, 24 May 2017 13:43:25 +0900
-Subject: [PATCH] fix #60 : invalid state(CCS_VALUE) in parse_char_class()
-
----
- regparse.c |    4 +++-
- 1 file changed, 3 insertions(+), 1 deletion(-)
-
---- end of original header
-
-CVE: CVE-2017-9228
-
-Upstream-Status: Inappropriate [not author]
-Signed-off-by: Joe Slater <joe.slater@windriver.com>
-
-diff --git a/regparse.c b/regparse.c
-index 69875fa..1988747 100644
---- a/regparse.c
-+++ b/regparse.c
-@@ -4081,7 +4081,9 @@ next_state_class(CClassNode* cc, OnigCodePoint* vs, enum CCVALTYPE* type,
-     }
-   }
- 
--  *state = CCS_VALUE;
-+  if (*state != CCS_START)
-+    *state = CCS_VALUE;
-+
-   *type  = CCV_CLASS;
-   return 0;
- }
--- 
-1.7.9.5
-

meta/recipes-devtools/ruby/ruby_2.5.5.bb

@@ -1,8 +1,6 @@
 require ruby.inc
 
 SRC_URI += " \
-           file://ruby-CVE-2017-9226.patch \
-           file://ruby-CVE-2017-9228.patch \
            file://run-ptest \
            "