Bug 1713912: Remove skip-if-fission annotations for tests browser_modal_print.js and browser_print_in_container.js. r=emilio

In the former case (for browser_modal_print.js), the test-failures seem to just
be bug 1700803, a known intermittent that's not asan/fission-specific (though
it might be worse with fission -- we can keep an eye on failure rates to see).

In the latter case (for browser_print_in_container.js), it looks like the test
has some known intermittent timeouts on slow configurations, and it's had some
observed timeouts on **non-fission** Linux-ASAN runs.  So it seems likely that
our Linux+ASAN+fission annotation there was accidentally too-specific, and
fission probably wasn't a relevant subcondition there.  Therefore, this patch
is just removing fission from that condition, so the test will now be skipped on
Linux ASAN testruns in general.

Differential Revision: https://phabricator.services.mozilla.com/D117363

toolkit/components/printing/tests/browser.ini

@@ -8,9 +8,6 @@ support-files =
 [browser_empty_paper_sizes.js]
 
 [browser_modal_print.js]
-skip-if =
-  fission && os == "linux" && asan  # Bug 1713912 - new Fission platform triage
-
 [browser_modal_resize.js]
 
 [browser_page_change_print_original.js]
@@ -81,5 +78,5 @@ skip-if =
 skip-if = 
   tsan # Bug 1683730
   os == "linux" && bits == 64 && debug # Bug 1683279 
-  os == "linux" && fission && asan  # Bug 1713912 - new Fission platform triage
+  os == "linux" && asan # Bug 1683279 
 [browser_system_dialog_subdialog_hidden.js]