ci: Disable "CTRL-C interrupts :global" test

This test is low-value, high-cost. It's slow, and sometimes crashes
luajit. It's still enabled on local runs, that's good enough.

test/functional/ex_cmds/ctrl_c_spec.lua

@@ -3,17 +3,15 @@ local Screen = require('test.functional.ui.screen')
 local clear, feed, source = helpers.clear, helpers.feed, helpers.source
 local execute = helpers.execute
 
-if helpers.pending_win32(pending) then return end
-
 describe("CTRL-C (mapped)", function()
   before_each(function()
     clear()
   end)
 
   it("interrupts :global", function()
+    -- Crashes luajit.
     if helpers.skip_fragile(pending,
-      (os.getenv("TRAVIS") and os.getenv("CLANG_SANITIZER") == "ASAN_UBSAN"))
-    then
+      os.getenv("TRAVIS") or os.getenv("APPVEYOR")) then
       return
     end
 

test/functional/ui/output_spec.lua

@@ -25,7 +25,7 @@ describe("shell command :!", function()
     screen:detach()
   end)
 
-  it("displays output even without LF/EOF. #4646 #4569 #3772", function()
+  it("displays output without LF/EOF. #4646 #4569 #3772", function()
     -- NOTE: We use a child nvim (within a :term buffer)
     --       to avoid triggering a UI flush.
     child_session.feed_data(":!printf foo; sleep 200\n")