Bug 1856934 - Remove duplicated function in Java HTML parser r=hsivonen

It was duplicated in the patch for Bug 1824121 without being caught.

Differential Revision: https://phabricator.services.mozilla.com/D190486

parser/html/javasrc/Tokenizer.java

@@ -697,15 +697,6 @@ public class Tokenizer implements Locator, Locator2 {
         return null;
     }
 
-    /**
-     * Gets the errorProfile.
-     *
-     * @param errorProfile
-     */
-    public HashMap getErrorProfile() {
-        return null;
-    }
-
     /**
      * Sets the commentPolicy.
      *