[gnome-software/wip/wjt/no-parent-instance-in-private-structs] Remove parent instance from Private structs

[Will Thompson <wjt src gnome org>]

commit b4424b9d5974c3ed2937dd1254f1fc8a86692842
Author: Will Thompson <wjt endlessos org>
Date:   Thu Feb 17 17:42:28 2022 +0000

    Remove parent instance from Private structs
    
    A number of types were switched from G_DECLARE_FINAL_TYPE to
    G_DECLARE_DERIVABLE_TYPE, and their structs renamed from GsFoo to
    GsFooPrivate, but the first element, embedding the parent type, was not
    removed.
    
    This is unneeded in the Private structure. G_DECLARE_DERIVABLE_TYPE
    defines an empty struct wrapping the parent.

 lib/gs-app.c          | 2 --
 src/gs-loading-page.c | 2 --
 src/gs-review-row.c   | 2 --
 3 files changed, 6 deletions(-)
---
diff --git a/lib/gs-app.c b/lib/gs-app.c
index 90b652d78..3e605a209 100644
--- a/lib/gs-app.c
+++ b/lib/gs-app.c
@@ -54,8 +54,6 @@
 
 typedef struct
 {
-       GObject                  parent_instance;
-
        GMutex                   mutex;
        gchar                   *id;
        gchar                   *unique_id;
diff --git a/src/gs-loading-page.c b/src/gs-loading-page.c
index ef53d4438..00764a318 100644
--- a/src/gs-loading-page.c
+++ b/src/gs-loading-page.c
@@ -15,8 +15,6 @@
 #include "gs-loading-page.h"
 
 typedef struct {
-       GsPage                   parent_instance;
-
        GsPluginLoader          *plugin_loader;
        GCancellable            *cancellable;
        GsShell                 *shell;
diff --git a/src/gs-review-row.c b/src/gs-review-row.c
index 0f9b98fd5..9afb4849b 100644
--- a/src/gs-review-row.c
+++ b/src/gs-review-row.c
@@ -15,8 +15,6 @@
 
 typedef struct
 {
-       GtkListBoxRow    parent_instance;
-
        AsReview        *review;
        gboolean         network_available;
        guint64          actions;