Bug 1734271 - Disable browser_test_zoom.js for webrender builds and reverted previous change r=aryx DONTBUILD

Differential Revision: https://phabricator.services.mozilla.com/D128692

accessible/tests/browser/bounds/browser.ini

@@ -7,8 +7,9 @@ support-files =
   !/accessible/tests/mochitest/letters.gif
 
 [browser_test_resolution.js]
-skip-if = (e10s && os == 'win') || (webrender) # bug 1372296, bug 1734271
+skip-if = e10s && os == 'win' # bug 1372296
 [browser_test_zoom.js]
+skip-if = webrender # Bug 1734271
 [browser_test_zoom_text.js]
 https_first_disabled = true
 skip-if = e10s && os == 'win' # bug 1372296