[mutter] tests/monitor-unit-tests: Remove left-over function declaration

[Marge Bot <marge-bot src gnome org>]

commit 20686f33542903210e50ec3d61ea13d0146d9db6
Author: Jonas Ådahl <jadahl gmail com>
Date:   Thu Sep 30 14:30:16 2021 +0200

    tests/monitor-unit-tests: Remove left-over function declaration
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2030>

 src/tests/monitor-unit-tests.h | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/src/tests/monitor-unit-tests.h b/src/tests/monitor-unit-tests.h
index bbf096b397..a6ce8345b1 100644
--- a/src/tests/monitor-unit-tests.h
+++ b/src/tests/monitor-unit-tests.h
@@ -31,6 +31,4 @@ void pre_run_monitor_tests (MetaContext *context);
 
 void finish_monitor_tests (void);
 
-MonitorTestCase * test_get_initial_monitor_test_case (void);
-
 #endif /* MONITOR_UNIT_TESTS_H */