Bug 1597673 - Revert expectations for browser_ext_devtools_network.js r=kashav

Differential Revision: https://phabricator.services.mozilla.com/D53821

--HG--
extra : moz-landing-system : lando

browser/components/extensions/test/browser/browser.ini

@@ -114,8 +114,7 @@ support-files = !/browser/components/places/tests/browser/head.js
 [browser_ext_devtools_inspectedWindow_eval_bindings.js]
 [browser_ext_devtools_inspectedWindow_reload.js]
 [browser_ext_devtools_network.js]
-fail-if = fission
-skip-if = os == 'linux' || (os == 'mac' && debug) || (debug && os == 'win' && bits == 64) # Bug1570478
+skip-if = fission || os == 'linux' || (os == 'mac' && debug) || (debug && os == 'win' && bits == 64) # Bug1570478
 [browser_ext_devtools_page.js]
 [browser_ext_devtools_page_incognito.js]
 [browser_ext_devtools_panel.js]