test,win: re-enable tls-server-verify in CI

Now that the test is fixed, node-accept-pull-request should
fail when the test fails.

Reviewed-By: James M Snell <jasnell@gmail.com>
PR-URL: https://github.com/joyent/node/pull/25368

test/simple/simple.status

@@ -6,7 +6,6 @@ test-cluster-basic                : PASS,FLAKY
 
 [$system==win32]
 test-timers-first-fire            : PASS,FLAKY
-test-tls-server-verify            : PASS,FLAKY
 
 [$system==linux]
 test-fs-readfile-error            : PASS,FLAKY