Bug 1381451 - Skip test browser_819510_perwindowpb.js on remaining platforms; r=me,a=test-only

browser/components/sessionstore/test/browser.ini

@@ -232,7 +232,7 @@ skip-if = (verify && debug && (os == 'mac' || os == 'win'))
 [browser_739531.js]
 [browser_739805.js]
 [browser_819510_perwindowpb.js]
-skip-if = (os == 'win' && bits == 64) || (os == "mac") || (os == "linux") # Win: Bug 1284312, Mac: Bug 1341980, Linux: bug 1381451
+skip-if = true # Bug 1284312, Bug 1341980, bug 1381451
 [browser_not_collect_when_idle.js]
 
 # Disabled for frequent intermittent failures