In your layout file (eg, main.xml) :
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/adsContainer">
<com.admob.android.ads.AdView
android:id="@+id/admobAds"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
app:backgroundColor="#000000"
app:primaryTextColor="#FFFFFF"
app:secondaryTextColor="#CCCCCC">
</LinearLayout>
Then in your code (eg, inside a “if” block)
(LinearLayout) adscontainer = (LinearLayout) findViewById(R.id.adsContainer);
View admobAds = (View) findViewById(R.id.admobAds);
adscontainer.removeView(admobAds);
This will “permanently” (for the lifecycle of the app) remove the ads from the layou, which means that there will not be any ads requested.