Remove mentions of require-full and require-ca

Author: maxammann

tokio-postgres/src/connect_tls.rs

@@ -24,7 +24,7 @@ where
             return Ok(MaybeTlsStream::Raw(stream))
         }
         SslMode::Prefer if negotiation == SslNegotiation::Direct => {
-            return Err(Error::tls("weak sslmode \"prefer\" may not be used with sslnegotiation=direct (use \"require\", \"verify-ca\", or \"verify-full\")".into()))
+            return Err(Error::tls("weak sslmode \"prefer\" may not be used with sslnegotiation=direct (use \"require\")".into()))
         }
         SslMode::Prefer | SslMode::Require => {}
     }