remove some old codes

Author: waruqi

xmake/core/project/project.lua

@@ -714,13 +714,6 @@ function project.interpreter()
             if type(result) == "function" then
                 result = result()
             end
-
-            -- attempt to get it from the platform tools, e.g. cc, cxx, ld ..
-            -- because these values may not exist in config cache when call `config.get()`, we need check and get it.
-            --
-            if not result then
-                result = platform.tool(variable)
-            end
         end
         return result
     end)