Remove not unnecessary code

app/src/main/java/net/pokeranalytics/android/ui/activity/SessionActivity.kt

@@ -3,7 +3,6 @@ package net.pokeranalytics.android.ui.activity
 import android.content.Context
 import android.content.Intent
 import android.os.Bundle
-import android.view.MenuItem
 import kotlinx.android.synthetic.main.activity_session.*
 import net.pokeranalytics.android.R
 import net.pokeranalytics.android.ui.activity.components.PokerAnalyticsActivity
@@ -37,15 +36,6 @@ class SessionActivity: PokerAnalyticsActivity() {
 		initUI()
 	}
 
-	override fun onOptionsItemSelected(item: MenuItem?): Boolean {
-		item?.let {
-			if (it.itemId == android.R.id.home) {
-				onBackPressed()
-			}
-		}
-		return super.onOptionsItemSelected(item)
-	}
-
 	override fun onBackPressed() {
 		super.onBackPressed()
 		(sessionFragment as SessionFragment).onBackPressed()