[gnome-builder/wip/gtk4-port] plugins/make: fix build warning

[Christian Hergert <chergert src gnome org>]

commit 3c157cf411c6c4b3a09c25e4a9101578827c523c
Author: Christian Hergert <chergert redhat com>
Date:   Wed Jun 15 15:34:57 2022 -0700

    plugins/make: fix build warning

 src/plugins/make/gbp-make-build-target-provider.c | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/src/plugins/make/gbp-make-build-target-provider.c 
b/src/plugins/make/gbp-make-build-target-provider.c
index cd008f076..7265db0b7 100644
--- a/src/plugins/make/gbp-make-build-target-provider.c
+++ b/src/plugins/make/gbp-make-build-target-provider.c
@@ -50,7 +50,6 @@ gbp_make_build_target_provider_get_targets_async (IdeBuildTargetProvider *provid
   GbpMakeBuildTargetProvider *self = (GbpMakeBuildTargetProvider *)provider;
   g_autoptr(GPtrArray) targets = NULL;
   g_autoptr(IdeTask) task = NULL;
-  g_autoptr(GError) error = NULL;
   IdeBuildSystem *build_system;
   IdeContext *context;