[gnome-shell/gnome-3-28] Revert "ShellAppCache: add cache to help keep I/O off main thread"

[Christian Hergert <chergert src gnome org>]

commit 5ccf92e80418610883574c6c2a0048028670c2fc
Author: Christian Hergert <chergert redhat com>
Date:   Wed Feb 26 23:43:18 2020 -0800

    Revert "ShellAppCache: add cache to help keep I/O off main thread"
    
    This reverts commit 2c549bfbbeca86bdeb9947e0b2ff54fc91602b0b.

 src/meson.build       |   2 -
 src/shell-app-cache.c | 386 --------------------------------------------------
 src/shell-app-cache.h |  19 ---
 3 files changed, 407 deletions(-)
---
diff --git a/src/meson.build b/src/meson.build
index 53f2a0f63f..1d655f4071 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -103,7 +103,6 @@ libshell_menu_dep = declare_dependency(link_with: libshell_menu)
 
 libshell_public_headers = [
   'shell-app.h',
-  'shell-app-cache.h',
   'shell-app-system.h',
   'shell-app-usage.h',
   'shell-embedded-window.h',
@@ -139,7 +138,6 @@ libshell_private_headers = [
 libshell_sources = [
   'gnome-shell-plugin.c',
   'shell-app.c',
-  'shell-app-cache.c',
   'shell-app-system.c',
   'shell-app-usage.c',
   'shell-embedded-window.c',