Getting Safari Driver error while instantiating Android Driver

I am trying to connect two Appium sessions with Selenium grid and trying to run a native application. I have taken reference of AppiumDriver and object of AndroidDriver, but is is throwing below error

The best matching driver provider org.openqa.selenium.safari.SafariDriver can’t create a new driver instance for Capabilities [{app=.apk, appium-version=1.6.3, noReset=false, newCommandTimeout=90000, platformVersion=6.0.1, platformName=Android, deviceName=Android, fullReset=true, launchTimeout=120000, resetKeyboard=true}]

My node config is below

{
“capabilities”: [{
“version”: “6.0.1”,
“maxInstances”: 1,
“browserName”: “Android”,
“platform”: “ANDROID”
}],
“configuration”: {
“cleanUpCycle”: 2000,
“port”: 4733,
“hubPort”: 4445,
“proxy”: “org.openqa.grid.selenium.proxy.DefaultRemoteProxy”,
“url”: “http://127.0.0.1:4733/wd/hub”,
“hubHost”: “127.0.0.1”,
“register”: true,
“timeout”: 120000,
“maxSession”: 1
}
}

Safari Browser can be Installed and used on Windows Computer other then Apple Products not on Android.

Ideally it should not ask for Safari driver as I am creation a Android driver instance. And also I have given app parameter so it should not ask for any browser driver.