remove global context cache

engine.go

@@ -45,7 +45,6 @@ type Engine struct {
 	DatabaseTZ *time.Location // The timezone of the database
 
 	disableGlobalCache bool
-	enableContextCache bool
 
 	tagHandlers map[string]tagHandler
 
@@ -314,11 +313,6 @@ func (engine *Engine) NewSession() *Session {
 	return session
 }
 
-// EnableContextCache will enable or disable context cache
-func (engine *Engine) EnableContextCache(enabled bool) {
-	engine.enableContextCache = enabled
-}
-
 // Close the engine
 func (engine *Engine) Close() error {
 	return engine.db.Close()

session_context.go

@@ -1,32 +0,0 @@
-// Copyright 2018 The Xorm Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package xorm
-
-import (
-	"context"
-)
-
-type cacheContext struct {
-	context.Context
-	values map[string]interface{}
-}
-
-func (c *cacheContext) Done() <-chan struct{} {
-	for k := range c.values {
-		delete(c.values, k)
-	}
-	return nil
-}
-
-func (c *cacheContext) Value(key interface{}) interface{} {
-	return c.values[key.(string)]
-}
-
-func WithCacher(ctx context.Context) context.Context {
-	return &cacheContext{
-		Context: ctx,
-		values:  make(map[string]interface{}),
-	}
-}