Fix linting issues

shared/locale.lua

@@ -31,7 +31,6 @@ end
 --- @param opts table<string, any> - Constructor opts param
 --- @return Locale
 function Locale:new(opts)
-    local self = {}
     setmetatable(self, Locale)
     self.warnOnMissing = opts.warnOnMissing or true
 
@@ -135,4 +134,4 @@ function Locale:delete(phraseTarget, prefix)
             end
         end
     end
-end
+end