ExpandableLayout: remove unused code

vlc-android/src/org/videolan/vlc/widget/ExpandableLayout.java

@@ -24,7 +24,6 @@ import org.videolan.vlc.R;
 import org.videolan.vlc.interfaces.OnExpandableListener;
 
 import android.content.Context;
-import android.content.res.TypedArray;
 import android.util.AttributeSet;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -42,13 +41,10 @@ public class ExpandableLayout extends LinearLayout {
     private final LinearLayout mContent;
     private Boolean mExpanded;
     private OnExpandableListener listener = null;
-    private Context mContext;
 
     public ExpandableLayout(Context context, AttributeSet attrs) {
         super(context, attrs);
 
-        mContext = context;
-
         LayoutInflater.from(context).inflate(R.layout.expandable_layout, this, true);
 
         mHeaderLayout = findViewById(R.id.header_layout);