Remove a useless file.

build/bin/startup.sh

@@ -1,12 +0,0 @@
-#!/bin/bash
-
-# executable path
-DIR="$( cd "$( dirname "$0"  )" && pwd  )"
-EXE_PATH=$GOPATH/bin/tank
-
-if [ -f "$EXE_PATH" ]; then
- nohup $EXE_PATH >/dev/null 2>&1 &
-else
- echo 'Cannot find $EXE_PATH.'
- exit 1
-fi