[gnome-builder] Revert "GVls Plugin: fix meson to find server"

[Christian Hergert <chergert src gnome org>]

commit f67010b4c755730ba76434c414f8d3e75ceb684a
Author: Christian Hergert <chergert redhat com>
Date:   Sat Dec 14 12:41:46 2019 -0800

    Revert "GVls Plugin: fix meson to find server"
    
    This reverts commit c66900699a2f4631a5c74888e2a7e9bdecd72b36.

 src/plugins/gvls/meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/plugins/gvls/meson.build b/src/plugins/gvls/meson.build
index a1454ac01..9e7d95a0d 100644
--- a/src/plugins/gvls/meson.build
+++ b/src/plugins/gvls/meson.build
@@ -10,6 +10,6 @@ configure_file(
     install_dir: plugindir,
 )
 
-gvls_stdio_server = find_program('org.gnome.gvsl.stdio.Server', required: false)
+gvls_stdio_server = find_program('org.gnome.gvsl.stdio.Server', false)
 
 endif