Remove darwin arm support

Author: zquestz

Makefile

@@ -3,8 +3,8 @@ CLINAME = bchctl
 OUTDIR = pkg
 
 # Allow user to override cross compilation scope
-OSARCH ?= darwin/amd64 darwin/arm64 dragonfly/amd64 freebsd/386 freebsd/amd64 freebsd/arm linux/386 linux/amd64 linux/arm netbsd/386 netbsd/amd64 netbsd/arm openbsd/386 openbsd/amd64 plan9/386 plan9/amd64 solaris/amd64 windows/386 windows/amd64
-DIRS ?= darwin_amd64 darwin_arm64 dragonfly_amd64 freebsd_386 freebsd_amd64 freebsd_arm linux_386 linux_amd64 linux_arm netbsd_386 netbsd_amd64 netbsd_arm openbsd_386 openbsd_amd64 plan9_386 plan9_amd64 solaris_amd64 windows_386 windows_amd64
+OSARCH ?= darwin/amd64 dragonfly/amd64 freebsd/386 freebsd/amd64 freebsd/arm linux/386 linux/amd64 linux/arm netbsd/386 netbsd/amd64 netbsd/arm openbsd/386 openbsd/amd64 plan9/386 plan9/amd64 solaris/amd64 windows/386 windows/amd64
+DIRS ?= darwin_amd64 dragonfly_amd64 freebsd_386 freebsd_amd64 freebsd_arm linux_386 linux_amd64 linux_arm netbsd_386 netbsd_amd64 netbsd_arm openbsd_386 openbsd_amd64 plan9_386 plan9_amd64 solaris_amd64 windows_386 windows_amd64
 
 all:
 	go build .