Fix redundant lovr.filesystem.getIdentity related;

api/init.lua

@@ -2029,9 +2029,6 @@ return {
           description = "Returns the identity of the game, which is used as the name of the save directory.  The default is `default`.",
           key = "lovr.filesystem.getIdentity",
           module = "lovr.filesystem",
-          related = {
-            "lovr.filesystem.setIdentity"
-          },
           variants = {
             {
               arguments = {},

api/lovr/filesystem/getIdentity.lua

@@ -11,8 +11,5 @@ return {
       type = 'string',
       description = 'The name of the save directory.'
     }
-  },
-  related = {
-    'lovr.filesystem.setIdentity'
   }
 }