diff --git a/01-golang1_6.patch b/01-golang1_6.patch
deleted file mode 100644
index 798f543..0000000
--- a/01-golang1_6.patch
+++ /dev/null
@@ -1,47 +0,0 @@
---- a/Makefile.COMMON	2016-03-31 21:27:13.088391632 +0900
---- b/Makefile.COMMON	2016-03-31 21:27:13.088391632 +0900
-+++ Makefile.COMMON	2016-03-31 21:40:00.450234289 +0900
-@@ -44,7 +44,7 @@
- GOOS   ?= $(shell uname | tr A-Z a-z)
- GOARCH ?= $(subst x86_64,amd64,$(patsubst i%86,386,$(shell uname -m)))
- 
--GO_VERSION ?= 1.5.1
-+GO_VERSION ?= 1.6
- GOURL      ?= https://golang.org/dl
- GOPKG      ?= go$(GO_VERSION).$(GOOS)-$(GOARCH).tar.gz
- GOPATH     := $(CURDIR)/.build/gopath
---- a/Makefile.COMMON	2016-05-07 01:00:04.729197514 +0900
-+++ b/Makefile.COMMON	2016-05-07 01:02:10.387244408 +0900
-@@ -51,16 +51,9 @@
- 
- # Check for the correct version of go in the path. If we find it, use it.
- # Otherwise, prepare to build go locally.
--ifeq ($(shell command -v "go" >/dev/null && go version | sed -e 's/^[^0-9.]*\([0-9.]*\).*/\1/'), $(GO_VERSION))
--	GOCC   ?= $(shell command -v "go")
--	GOFMT  ?= $(shell command -v "gofmt")
--	GO     ?= GOPATH=$(GOPATH) $(GOCC)
--else
--	GOROOT ?= $(CURDIR)/.build/go$(GO_VERSION)
--	GOCC   ?= $(GOROOT)/bin/go
--	GOFMT  ?= $(GOROOT)/bin/gofmt
--	GO     ?= GOROOT=$(GOROOT) GOPATH=$(GOPATH) $(GOCC)
--endif
-+GOCC   ?= $(shell command -v "go")
-+GOFMT  ?= $(shell command -v "gofmt")
-+GO     ?= GOPATH=$(GOPATH) $(GOCC)
- 
- # Never honor GOBIN, should it be set at all.
- unexport GOBIN
---- a/Makefile.COMMON	2016-05-07 01:00:04.729197514 +0900
-+++ b/Makefile.COMMON	2016-05-07 01:00:19.126786174 +0900
-@@ -79,8 +79,8 @@
- 	@echo Abort now if you want to manually install it system-wide instead.
- 	@echo
- 	@sleep 5
--	mkdir -p $(GOROOT)
--	curl -L $(GOURL)/$(GOPKG) | tar -C $(GOROOT) --strip 1 -xz
-+	#mkdir -p $(GOROOT)
-+	#curl -L $(GOURL)/$(GOPKG) | tar -C $(GOROOT) --strip 1 -xz
- 
- $(SELFLINK):
- 	mkdir -p $(dir $@)