Drop \OC_Theme::getLogoClaim

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

themes/example/defaults.php

@@ -76,15 +76,6 @@ class OC_Theme {
 		return 'Your custom cloud, personalized for you!';
 	}
 
-	/**
-	 * Returns logo claim
-	 * @return string logo claim
-	 * @deprecated 13.0.0 not used anymore
-	 */
-	public function getLogoClaim() {
-		return '';
-	}
-
 	/**
 	 * Returns short version of the footer
 	 * @return string short footer