dnsmasq: remove useless patch

Signed-off-by: ZiMing Mo <msylgj@immortalwrt.org>

package/network/services/dnsmasq/patches/911-dnsmasq-filter-a&aaaa.patch

@@ -1,38 +0,0 @@
-From 966471712184cfb3b067f2ae8dad9d8e2a896cae Mon Sep 17 00:00:00 2001
-From: Bearice Ren <bearice@icybear.net>
-Date: Tue, 20 Sep 2016 11:52:08 +0800
-Subject: [PATCH] add filter-a & filter-aaaa option
-
----
- src/rfc1035.c | 20 ++++++++++
- 1 files changed, 20 insertions(+)
-
---- a/src/rfc1035.c
-+++ b/src/rfc1035.c
-@@ -2111,6 +2111,26 @@ size_t answer_request(struct dns_header
- 	    }
- 	}
- 
-+      /* patch to filter a forwards */
-+      if (qtype == T_A && option_bool(OPT_FILTER_A))
-+        {
-+          /* return a null reply */
-+          ans = 1;
-+          if (!dryrun)
-+            log_query(F_CONFIG | F_IPV4 | F_NEG, name, &addr, NULL, 0);
-+          break;
-+        }
-+
-+      /* patch to filter aaaa forwards */
-+      if (qtype == T_AAAA && option_bool(OPT_FILTER_AAAA))
-+        {
-+          /* return a null reply */
-+          ans = 1;
-+          if (!dryrun)
-+            log_query(F_CONFIG | F_IPV6 | F_NEG, name, &addr, NULL, 0);
-+          break;
-+        }
-+
-       if (!ans)
- 	return 0; /* failed to answer a question */
-     }