[glib/flaky-monitor] Remove monitor test

[Emmanuele Bassi <ebassi src gnome org>]

commit 5299e8754ceef8f25044fceb4506e3382a055658
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Mon Apr 22 10:34:16 2019 +0100

    Remove monitor test
    
    The `monitor` test was originally written to test GFileMonitor with
    directories. Over time, `testfilemonitor` acquired units for testing
    directories as well, which made the `monitor` test reduntant.

 gio/tests/meson.build |   1 -
 gio/tests/monitor.c   | 220 --------------------------------------------------
 2 files changed, 221 deletions(-)
---
diff --git a/gio/tests/meson.build b/gio/tests/meson.build
index f13458181..10bab3137 100644
--- a/gio/tests/meson.build
+++ b/gio/tests/meson.build
@@ -54,7 +54,6 @@ gio_tests = {
   'io-stream' : {},
   'memory-input-stream' : {},
   'memory-output-stream' : {},
-  'monitor' : {},
   'mount-operation' : {},
   'network-address' : {'extra_sources': ['mock-resolver.c']},
   'network-monitor' : {},