remove dul

@@ -34,23 +34,3 @@ function M.get_req_param(req_param)
 end
 
 
-function M.get_get_req_param(req_param)
-  local args , err = ngx.req.get_uri_args()
-  --- make sure this is some params
-  if not args then
-    ngx.say("failed to get args: ", err)
-    return nil
-  end
-
-  -- the value may be table, like: /test?foo=bar&bar=baz&bar=blah
-  local val=args[req_param]
-  if type(val) == "table" then
-    for k,v in pairs(val) do
-      if v then
-        return  v
-      end 
-    end
-  else
-  	return val
-  end
-end
\ No newline at end of file

@@ -34,7 +34,7 @@ function extract_limit_method()
     local  method= http_request.get_req_param("method") 
 
     -- get bussiness line
-    local business_line = http_request.get_get_req_param("business_line")
+    local business_line = http_request.get_req_param("business_line")
     if (business_line == "miniappBrandM1") or  (business_line == "miniappBrandM2") then
       method = business_line
     end