Remove unused regression test certificate server-ss

The server-ss certificate was included in e39250c but was never
used in the TLS regression tests so remove.

Author: Jacob Champion
Discussion: https://postgr.es/m/d15a9838344ba090e09fd866abf913584ea19fb7.camel@vmware.com

Author: danielgustafsson

src/test/ssl/Makefile

@@ -17,7 +17,7 @@ export with_ssl
 
 CERTIFICATES := server_ca server-cn-and-alt-names \
 	server-cn-only server-single-alt-name server-multiple-alt-names \
-	server-no-names server-revoked server-ss \
+	server-no-names server-revoked \
 	client_ca client client-dn client-revoked \
 	root_ca
 
@@ -74,12 +74,6 @@ ssl/server-%.crt: ssl/server-%.key ssl/server_ca.crt server-%.config
 	openssl x509 -in ssl/temp.crt -out ssl/server-$*.crt # to keep just the PEM cert
 	rm ssl/server-$*.csr
 
-# Self-signed version of server-cn-only.crt
-ssl/server-ss.crt: ssl/server-cn-only.key ssl/server-cn-only.crt server-cn-only.config
-	openssl req -new -key ssl/server-cn-only.key -out ssl/server-ss.csr -config server-cn-only.config
-	openssl x509 -req -days 10000 -in ssl/server-ss.csr -signkey ssl/server-cn-only.key -out ssl/server-ss.crt  -extensions v3_req -extfile server-cn-only.config
-	rm ssl/server-ss.csr
-
 # Password-protected version of server-cn-only.key
 ssl/server-password.key: ssl/server-cn-only.key
 	openssl rsa -aes256 -in $< -out $@ -passout 'pass:secret1'

src/test/ssl/README

@@ -52,9 +52,6 @@ server-no-names
 	server certificates, with small variations in the hostnames present
         in the certificate. Signed by server_ca.
 
-server-ss
-	same as server-cn-only, but self-signed.
-
 server-password
 	same as server-cn-only, but password-protected.