postgresqlPackages.{age,pg_hint_plan,pg_safeupdate,pgaudit}: remove obsolete package versions for PG 13

PG 13 has been dropped from Nixpkgs for a while.

pkgs/servers/sql/postgresql/ext/age.nix

@@ -16,7 +16,6 @@ let
     "16" = "sha256-iukdi2c3CukGvjuTojybFFAZBlAw8GEfzFPr2qJuwTA=";
     "15" = "sha256-webZWgWZGnSoXwTpk816tjbtHV1UIlXkogpBDAEL4gM=";
     "14" = "sha256-jZXhcYBubpjIJ8M5JHXKV5f6VK/2BkypH3P7nLxZz3E=";
-    "13" = "sha256-HR6nnWt/V2a0rD5eHHUsFIZ1y7lmvLz36URt9pPJnCw=";
   };
 in
 postgresqlBuildExtension (finalAttrs: {

pkgs/servers/sql/postgresql/ext/pg_hint_plan.nix

@@ -27,10 +27,6 @@ let
       version = "1.4.4";
       hash = "sha256-8rJ4Ck0Axf9zKhOXaJ4EA/M783YZRLuWx+GMGccadVo=";
     };
-    "13" = {
-      version = "1.3.11";
-      hash = "sha256-XTxCw1Uj6rVLcXJuHoT3RkEhdKVLGjOdR7rhFI8YJas=";
-    };
   };
 
   source =

pkgs/servers/sql/postgresql/ext/pg_safeupdate.nix

@@ -7,10 +7,6 @@
 
 let
   sources = {
-    "13" = {
-      version = "1.4";
-      hash = "sha256-1cyvVEC9MQGMr7Tg6EUbsVBrMc8ahdFS3+CmDkmAq4Y=";
-    };
     "14" = {
       version = "1.5";
       hash = "sha256-RRSpkWLFuif+6RCncnsb1NnjKnIIRY9KgebKkjCN5cs=";

pkgs/servers/sql/postgresql/ext/pgaudit.nix

@@ -26,10 +26,6 @@ let
       version = "1.6.3";
       hash = "sha256-KgLidJHjUK9BTp6ffmGUj1chcwIe6IzlcadRpGCfNdM=";
     };
-    "13" = {
-      version = "1.5.3";
-      hash = "sha256-IU4Clec3DkKWT7+kw0VtQNybt94i7M2rSSgJG/XdcRs=";
-    };
   };
 
   source =