Cleanup, some lint issues fixes

android-app/src/main/res/layout/math_entity.xml

@@ -22,36 +22,23 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<LinearLayout style="@style/CppListViewItem"
+<LinearLayout
+	style="@style/CppListViewItem"
 	xmlns:a="http://schemas.android.com/apk/res/android"
 	a:layout_width="match_parent"
 	a:layout_height="wrap_content"
-	a:orientation="horizontal">
+	a:orientation="vertical">
 
-	<LinearLayout
-		a:layout_width="0dp"
-		a:layout_height="wrap_content"
-		a:layout_weight="1"
-		a:orientation="vertical">
+	<TextView
+		a:id="@+id/math_entity_text"
+		style="@style/CppListViewItemTextPrimary"
+		a:layout_width="match_parent"
+		a:layout_height="wrap_content"/>
 
-		<TextView
-			a:id="@+id/math_entity_text"
-			style="@style/CppListViewItemTextPrimary"
-			a:layout_width="match_parent"
-			a:layout_height="wrap_content" />
-
-		<TextView
-			a:id="@+id/math_entity_short_description"
-			style="@style/CppListViewItemTextSecondary"
-			a:layout_width="match_parent"
-			a:layout_height="wrap_content" />
-	</LinearLayout>
-
-	<ImageView
-		a:id="@+id/math_entity_description_imageview"
-		a:layout_width="wrap_content"
-		a:layout_height="match_parent"
-		a:scaleType="centerInside"
-		a:visibility="gone" />
+	<TextView
+		a:id="@+id/math_entity_short_description"
+		style="@style/CppListViewItemTextSecondary"
+		a:layout_width="match_parent"
+		a:layout_height="wrap_content"/>
 
 </LinearLayout>