Remove unused parameter (now that we are using em units not px)

Author: dpvc

ts/output/chtml.ts

@@ -272,7 +272,7 @@ CommonOutputJax<
   /**
    * @override
    */
-  public unknownText(text: string, variant: string, width: number = null, rscale: number = 1) {
+  public unknownText(text: string, variant: string, width: number = null) {
     const styles: StyleList = {};
     const scale = 100 / this.math.metrics.scale;
     if (scale !== 100) {

ts/output/chtml/Wrappers/TextNode.ts

@@ -117,8 +117,7 @@ export const ChtmlTextNode = (function <N, T, D>(): ChtmlTextNodeClass<N, T, D>
       if (text.length === 0) return;
       const bbox = this.getBBox();
       if (variant === '-explicitFont') {
-        const {scale} = this.parent.getBBox();
-        adaptor.append(parent, this.jax.unknownText(text, variant, bbox.w, scale));
+        adaptor.append(parent, this.jax.unknownText(text, variant, bbox.w));
       } else {
         let utext = '';
         const chars = this.remappedText(text, variant);