net-libs/libsmi: remove unused patch(es)

Closes: https://github.com/gentoo/gentoo/pull/19290
Package-Manager: Portage-3.0.14, Repoman-3.0.2
Signed-off-by: Michael Mair-Keimberger <m.mairkeimberger@gmail.com>
Signed-off-by: Conrad Kostecki <conikost@gentoo.org>

net-libs/libsmi/files/libsmi-0.4.8-CVE-2010-2891.patch

@@ -1,19 +0,0 @@
---- a/lib/smi.c
-+++ b/lib/smi.c
-@@ -1793,10 +1793,15 @@
-     }
- 
-     if (isdigit((int)node2[0])) {
--	for (oidlen = 0, p = strtok(node2, ". "); p;
-+	for (oidlen = 0, p = strtok(node2, ". ");
-+	     p && oidlen < sizeof(oid)/sizeof(oid[0]);
- 	     oidlen++, p = strtok(NULL, ". ")) {
- 	    oid[oidlen] = strtoul(p, NULL, 0);
- 	}
-+	if (p) {
-+	    /* the numeric OID is too long */
-+	    return NULL;
-+	}
- 	nodePtr = getNode(oidlen, oid);
- 	if (nodePtr) {
- 	    if (modulePtr) {