remove unused code

This code is never used and will not be used in the future.
Adressing the equation for search will be handled by the
MathSearch extension. There will be a hook function to label
the equations.

Change-Id: Ia2149460134b361fb44f8ad85660793b1951d988

Math.hooks.php

@@ -50,7 +50,6 @@ class MathHooks {
 		$renderer = MathRenderer::getRenderer(
 			$content, $attributes, $mode
 		);
-		$renderer->setAnchorID( $parser->nextLinkID() ); // Add an ID for referencing the equation later on only used by LaTeXML
 		$renderedMath = $renderer->render();
 		if ( $wgUseMathJax && $mode == MW_MATH_MATHJAX ) {
 			$parser->getOutput()->addModules( array( 'ext.math.mathjax.enabler' ) );

MathRenderer.php

@@ -28,7 +28,6 @@ abstract class MathRenderer {
 	var $conservativeness = 0;
 	var $params = '';
 	protected $recall;
-	protected $anchorID = 0;
 
 	/**
 	 * Constructs a base MathRenderer
@@ -204,24 +203,6 @@ abstract class MathRenderer {
 		return $this->recall;
 	}
 
-	/**
-	 * Gets anchor ID
-	 *
-	 * @return string anchor ID
-	 */
-	public function getAnchorID() {
-		return $this->anchorID;
-	}
-
-	/**
-	 * Sets anchor ID
-	 *
-	 * @param string ID anchor ID
-	 */
-	public function setAnchorID( $ID ) {
-		$this->anchorID = $ID;
-	}
-
 	/**
 	 * Gets TeX markup
 	 *