Fix lint warnings

Change-Id: If8fa48d4e1b5327f825913a8420d20070e6bef88
diff --git a/ui/views/Elevation/ElevationBasic/Application/src/main/java/com/example/android/elevationbasic/ElevationBasicFragment.java b/ui/views/Elevation/ElevationBasic/Application/src/main/java/com/example/android/elevationbasic/ElevationBasicFragment.java
index 71edea5..4a00590 100644
--- a/ui/views/Elevation/ElevationBasic/Application/src/main/java/com/example/android/elevationbasic/ElevationBasicFragment.java
+++ b/ui/views/Elevation/ElevationBasic/Application/src/main/java/com/example/android/elevationbasic/ElevationBasicFragment.java
@@ -19,7 +19,6 @@
 import android.support.v4.app.Fragment;
 import android.os.Bundle;
 import android.view.LayoutInflater;
-import android.view.MenuItem;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
diff --git a/ui/views/Elevation/ElevationBasic/Application/src/main/res/layout/elevation_basic.xml b/ui/views/Elevation/ElevationBasic/Application/src/main/res/layout/elevation_basic.xml
index 83ab1d2..d6c9510 100644
--- a/ui/views/Elevation/ElevationBasic/Application/src/main/res/layout/elevation_basic.xml
+++ b/ui/views/Elevation/ElevationBasic/Application/src/main/res/layout/elevation_basic.xml
@@ -16,14 +16,13 @@
 -->
 
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
-             xmlns:tools="http://schemas.android.com/tools"
              android:layout_width="match_parent"
              android:layout_height="match_parent">
     <View
             android:id="@+id/floating_shape"
             android:layout_width="80dp"
             android:layout_height="80dp"
-            android:layout_marginRight="40dp"
+            android:layout_marginEnd="40dp"
             android:background="@drawable/shape"
             android:elevation="30dp"
             android:layout_gravity="center"/>
@@ -31,7 +30,7 @@
             android:id="@+id/floating_shape_2"
             android:layout_width="80dp"
             android:layout_height="80dp"
-            android:layout_marginLeft="25dp"
+            android:layout_marginStart="25dp"
             android:background="@drawable/shape2"
             android:layout_gravity="center"/>
 </FrameLayout>