[gnome-builder] maven: Fix ignoring TestProvider

[Christian Hergert <chergert src gnome org>]

commit 31d85142bb7e9fda0e7e6477f98781c09d642d49
Author: Alberto Fanjul <albertofanjul gmail com>
Date:   Sat Jun 16 10:12:53 2018 +0200

    maven: Fix ignoring TestProvider

 src/plugins/maven/maven_plugin.py | 3 ---
 1 file changed, 3 deletions(-)
---
diff --git a/src/plugins/maven/maven_plugin.py b/src/plugins/maven/maven_plugin.py
index cdb0eb27a..546ca3e25 100755
--- a/src/plugins/maven/maven_plugin.py
+++ b/src/plugins/maven/maven_plugin.py
@@ -229,9 +229,6 @@ class MavenIdeTestProvider(Ide.TestProvider):
         build_system = context.get_build_system()
 
         if type(build_system) != MavenBuildSystem:
-            task.return_error(GLib.Error('Not maven build system',
-                                         domain=GLib.quark_to_string(Gio.io_error_quark()),
-                                         code=Gio.IOErrorEnum.NOT_SUPPORTED))
             return
 
         # find all files in test directory