Clean layout

app/src/main/res/layout/row_history_session.xml

@@ -1,21 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-	xmlns:tools="http://schemas.android.com/tools"
 	android:layout_width="match_parent"
 	android:layout_height="wrap_content"
 	android:orientation="vertical">
 
-	<androidx.appcompat.widget.AppCompatTextView
-		android:id="@+id/sessionHeader"
-		style="@style/PokerAnalyticsTheme.TextView.SessionHeader"
-		android:layout_width="wrap_content"
-		android:layout_height="wrap_content"
-		android:layout_marginStart="16dp"
-		android:layout_marginTop="16dp"
-		android:visibility="gone"
-		tools:text="Header"
-		tools:visibility="visible" />
-
 	<net.pokeranalytics.android.ui.view.SessionRowView
 		android:id="@+id/sessionRow"
 		android:layout_width="match_parent"