[glibmm/std-string-msvc-fixes: 2/6] variantdbusstring.h: Don't mark classes with GLIBMM_API

[Chun-wei Fan <fanchunwei src gnome org>]

commit 2abf27f3a33eae177bd165db741886c94339a402
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Fri May 7 12:13:28 2021 +0800

    variantdbusstring.h: Don't mark classes with GLIBMM_API
    
    It's actually not necessary here, and it will cause issues with the previous
    commit

 glib/glibmm/variantdbusstring.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/glib/glibmm/variantdbusstring.h b/glib/glibmm/variantdbusstring.h
index ced63b8c..f6a6e75a 100644
--- a/glib/glibmm/variantdbusstring.h
+++ b/glib/glibmm/variantdbusstring.h
@@ -36,7 +36,7 @@ namespace Glib
  * @newin{2,54}
  * @ingroup Variant
 */
-class GLIBMM_API DBusObjectPathString : public Glib::ustring
+class DBusObjectPathString : public Glib::ustring
 {
 public:
   using Glib::ustring::ustring;
@@ -53,7 +53,7 @@ public:
  * @newin{2,54}
  * @ingroup Variant
 */
-class GLIBMM_API DBusSignatureString : public Glib::ustring
+class DBusSignatureString : public Glib::ustring
 {
 public:
   using Glib::ustring::ustring;