conf: disable internal Sign subtypes

rust-bindings/rust/sys/src/auto/versions.txt

@@ -1,2 +1,2 @@
 Generated by gir (https://github.com/gtk-rs/gir @ 2d1ffab1)
-from gir-files (https://github.com/gtk-rs/gir-files @ ed7b959+)
+from gir-files (https://github.com/gtk-rs/gir-files @ 7ce8ed9)

rust-bindings/rust/sys/src/lib.rs

@@ -725,44 +725,6 @@ impl ::std::fmt::Debug for OstreeRepoTransactionStats {
     }
 }
 
-#[repr(C)]
-pub struct _OstreeSignDummy(c_void);
-
-pub type OstreeSignDummy = *mut _OstreeSignDummy;
-
-#[repr(C)]
-#[derive(Copy, Clone)]
-pub struct OstreeSignDummyClass {
-    pub parent_class: gobject::GObjectClass,
-}
-
-impl ::std::fmt::Debug for OstreeSignDummyClass {
-    fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
-        f.debug_struct(&format!("OstreeSignDummyClass @ {:?}", self as *const _))
-         .field("parent_class", &self.parent_class)
-         .finish()
-    }
-}
-
-#[repr(C)]
-pub struct _OstreeSignEd25519(c_void);
-
-pub type OstreeSignEd25519 = *mut _OstreeSignEd25519;
-
-#[repr(C)]
-#[derive(Copy, Clone)]
-pub struct OstreeSignEd25519Class {
-    pub parent_class: gobject::GObjectClass,
-}
-
-impl ::std::fmt::Debug for OstreeSignEd25519Class {
-    fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
-        f.debug_struct(&format!("OstreeSignEd25519Class @ {:?}", self as *const _))
-         .field("parent_class", &self.parent_class)
-         .finish()
-    }
-}
-
 #[repr(C)]
 #[derive(Copy, Clone)]
 pub struct OstreeSignInterface {