A little clean-up of the getDocument call in test/driver.js

- Pass the `URL`-object directly to `getDocument`, since that's been supported since PR 13166.
 - Remove support for the `disableRange`-option in the test-manifest, since it's completely unused. Please note that it's originally added in PR 2719, however there's never actually been any reference tests using it (not even from the start).
   Given that the option is `false` by default everywhere (e.g. in the Firefox PDF Viewer) and that we have unit-tests for `disableRange = true`, it doesn't seem necessary to add new reference tests for it now.

test/driver.js

@@ -457,7 +457,6 @@ class Driver {
 
       this._log('Loading file "' + task.file + '"\n');
 
-      const absoluteUrl = new URL(task.file, window.location).href;
       try {
         let xfaStyleElement = null;
         if (task.enableXfa) {
@@ -471,11 +470,10 @@ class Driver {
         }
 
         const loadingTask = getDocument({
-          url: absoluteUrl,
+          url: new URL(task.file, window.location),
           password: task.password,
           cMapUrl: CMAP_URL,
           standardFontDataUrl: STANDARD_FONT_DATA_URL,
-          disableRange: task.disableRange,
           disableAutoFetch: !task.enableAutoFetch,
           pdfBug: true,
           useSystemFonts: task.useSystemFonts,