proxysql: clean up extends

component/proxysql/buildout.cfg

@@ -2,22 +2,19 @@
 extends =
   ../autoconf/buildout.cfg
   ../automake/buildout.cfg
-  ../libtool/buildout.cfg
-  ../cmake/buildout.cfg
-  ../openssl/buildout.cfg
-  ../patch/buildout.cfg
-  ../git/buildout.cfg
-  ../openssl/buildout.cfg
   ../bzip2/buildout.cfg
-  ../perl/buildout.cfg
-  ../gnutls/buildout.cfg
+  ../cmake/buildout.cfg
   ../curl/buildout.cfg
+  ../git/buildout.cfg
   ../gnutls/buildout.cfg
-  ../libzip/buildout.cfg
-  ../m4/buildout.cfg
-  ../pcre/buildout.cfg
   ../jemalloc/buildout.cfg
   ../libmicrohttpd/buildout.cfg
+  ../libtool/buildout.cfg
+  ../m4/buildout.cfg
+  ../openssl/buildout.cfg
+  ../patch/buildout.cfg
+  ../pcre/buildout.cfg
+  ../perl/buildout.cfg
 
 parts =
   proxysql