Remove a patch that is no longer necessary for the modernized port.

We are doing SOCKS support a different way now.

irc/sirc/files/patch-aa

@@ -1,16 +0,0 @@
---- sirc-proto	Tue May  5 00:23:11 1998
-+++ sirc-proto	Tue May  5 00:32:45 1998
-@@ -3,6 +3,13 @@
- PREFIX=
- SIRCLIB=${PREFIX}/libexec/sirc ; export SIRCLIB
- 
-+# See README.socks in SIRCLIB for more details
-+SOCKS_SERVER= ; export SOCKS_SERVER
-+# 1080 is the default
-+SOCKS_PORT=1080; export SOCKS_PORT
-+# Uncomment only if you have no access to a name server
-+#SOCKS_DNS=1; export SOCKS_DNS
-+
- if test -z "$SIRCSERVER" && test -z "$IRCSERVER"
- then
-   SIRCSERVER="irc.dal.net"