Remove disabled alpha adjustment from SeekBar track

<?xml version="1.0" encoding="utf-8"?>

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     Licensed under the Apache License, Version 2.0 (the "License");

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<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:color="?attr/colorControlNormal" />

</selector>

            android:opticalInsetLeft="3dp"

            android:opticalInsetRight="3dp">

            <solid

                android:color="#ff000000" />

                android:color="@color/white" />

            <size

                android:width="18dp"

                android:height="18dp" />

    <item android:id="@id/background"

          android:gravity="center_vertical|fill_horizontal">

        <shape android:shape="rectangle"

               android:tint="?attr/colorControlNormal">

               android:tint="@color/control_nodisable_material">

            <size android:height="@dimen/seekbar_track_background_height_material" />

            <solid android:color="@color/white_disabled_material" />

        </shape>